What is the four-pass weft sequence for weaving an open tube in rigid heddle double weave, and how does the shuttle direction at each selvedge determine whether the tube is open or closed?

The four-pass weft sequence for one complete round of a double weave tube passes weft through the four successive sheds in the following order: Layer A top shed (heddle UP), Layer A bottom shed (heddle DOWN), Layer B top shed (pick-up stick turned on edge with heddle neutral), Layer B bottom shed (heddle DOWN with pick-up stick flat, or achieved with a second pick-up stick from below). Each pass advances one layer by one plain weave pick. After four passes both Layer A and Layer B have each completed one full weft pick pair, advancing the tube by one weft round. Beat after each pass before opening the next shed. The Layer A shuttle and Layer B shuttle move through these sheds independently — Layer A shuttle handles passes 1 and 2, Layer B shuttle handles passes 3 and 4. Whether the tube's left and right selvedge edges are open or closed is determined entirely by the shuttle direction at those edges. At a joined selvedge (closed tube edge): the Layer A and Layer B shuttles share the selvedge — as Layer B shuttle enters from the right side at pass 3, it crosses over the Layer A shuttle that is waiting at the right edge after pass 2, linking the two layers together at that edge with each weft round. At an open selvedge: both shuttles turn independently at that edge — Layer A shuttle exits right after pass 2 and Layer B shuttle also exits right after pass 4 and enters from the right at the start of pass 3, with no crossing between them. The right edge is open; the two layers turn independently. A tube with the left selvedge joined and right selvedge open is the standard double-width configuration: when the finished piece is removed from the loom and the fold at the left edge is opened, the fabric unfolds to twice the weaving width with the right edge being two separate raw selvedge edges requiring finishing.

Explainers · Craft creators

Patreon for rigid heddle double weave creators: pick-up stick layer separation, sett calculation, open tube vs double-width vs pocket construction, four-pass weft sequence, and the Apple Tax

Q: What is the pick-up stick in rigid heddle double weave and how does it create a second independent fabric layer?

The pick-up stick in rigid heddle double weave is a flat, smooth stick threaded through the warp threads from behind the heddle before weaving begins. Its purpose is to provide a third shed that is independent from the two sheds the heddle provides natively — this third shed opens Layer B's warp threads independently of Layer A, which is what makes two-layer weaving possible on a loom that only has one heddle. Threading the pick-up stick: with the heddle in the neutral position, look at the warp from the back of the loom. The warp at this point shows alternating hole threads (Layer A) and slot threads (Layer B). Insert the pick-up stick behind the heddle and weave it across the full warp width by passing the stick tip over each hole thread and under each slot thread — over Layer A, under Layer B, over Layer A, under Layer B, continuously across. At the end, every Layer B slot thread is held on the underside of the stick, and every Layer A hole thread passes above the stick. When the stick lies flat, it does not open a shed. When the stick is turned on its edge (stood up vertically), it lifts all the Layer B slot threads it is holding above the Layer A hole threads, opening the Layer B top shed. This is the third shed — available only by turning the pick-up stick, not by any heddle movement. The three sheds available with one heddle and a pick-up stick are: Layer A top shed (heddle UP), Layer A bottom shed (heddle DOWN), and Layer B top shed (pick-up stick turned on edge with heddle neutral). A functional Layer B bottom shed requires an additional stick or a second heddle, which is why the two-heddle setup provides cleaner double weave than the pick-up stick method alone. The pick-up stick stays at the back of the loom, resting flat between sheds, and is only turned on its edge when the Layer B top shed is needed in the four-pass weft cycle.

Q: How is the sett calculated for rigid heddle double weave, and why does each layer weave at half the standard single-layer sett?

Sett for rigid heddle double weave is exactly double the standard single-layer sett for the same yarn, and the reason is precise arithmetic: each layer in double weave is a complete plain weave fabric that must achieve the correct interlacement density for the yarn used, but each layer occupies only every other warp position across the total warp width. If a yarn weaves well at 10 ends per inch as a single layer, then at the total double weave warp density of 20 ends per inch, the hole threads (Layer A) are spaced at 10 per inch across the warp — exactly every other position out of 20 — and the slot threads (Layer B) are also at 10 per inch across the remaining positions. Both layers weave at the correct 10-ends-per-inch single-layer sett in their own fabric planes. A total density below double the single-layer sett means each layer is too open and the fabric is sleazy; above double means each layer is too dense and the heddle will be difficult to open cleanly. The threading for double weave at this sett follows the strict hole-slot-hole-slot alternating sequence: first end through a hole (Layer A), second end through the adjacent slot (Layer B), third end through the next hole (Layer A), fourth end through the next slot (Layer B), across the full warp width. Any deviation — two consecutive hole ends, two consecutive slot ends — breaks the layer separation and causes the two layers to interlock at those positions, producing a fabric that cannot be opened into separate layers. Practical calculation: for a 12-inch wide double weave project using yarn that weaves at 8 ends per inch single-layer, the total warp count is 12 inches times 16 ends per inch (double sett) equals 192 ends total — 96 hole ends for Layer A and 96 slot ends for Layer B.

Q: How does the double-width technique in rigid heddle double weave produce a fabric wider than the loom's maximum weaving width?

The double-width technique uses the tube structure of rigid heddle double weave to weave a fabric at twice the heddle's maximum weaving width. The setup: warp the loom to the full heddle weaving width at double sett, thread for double weave with strict hole-slot alternation, and configure the selvedge assignments so that the left selvedge is joined (both Layer A and Layer B shuttles share the left edge, locking the two layers together) and the right selvedge is open (both shuttles turn independently at the right edge, leaving the layers unconnected there). Weave the full desired length in the four-pass cycle. The fabric on the loom is a tube with its fold at the left selvedge and its open mouth at the right selvedge. After removing the fabric from the loom, open the tube by spreading the fold: the left selvedge fold becomes the center of the finished fabric, and the fabric unfolds to a flat piece at twice the weaving width. A 15-inch rigid heddle loom produces a finished flat fabric approximately 28 to 30 inches wide (allowing for draw-in) using this technique. The left selvedge fold edge is a clean finished woven edge requiring no hemming. The right open edge consists of two separate raw selvedge edges — one from Layer A and one from Layer B — that require hemming, machine-stitching, or fringe treatment. The practical constraint: the weaving width on the loom is exactly half the desired finished width. For a 24-inch wide table runner, warp to 12 inches at double sett. For a 30-inch lap blanket, warp to 15 inches. Beat consistency is critical for double-width: if Layer A and Layer B have different picks-per-inch because the beat varied between Layer A passes and Layer B passes, the two halves of the opened fabric will have different lengths and the finished piece will buckle along the center fold line.

Q: What is the Apple Tax on rigid heddle weaving Patreon audiences from November 2026, and what are the specific monthly amounts at typical creator income levels?

Rigid heddle weaving audiences are strongly iOS-concentrated across every platform where weaving documentation is consumed. Instagram accounts covering rigid heddle weaving — warping tutorials, double weave construction videos, finished cloth photography — are 70–83% iOS: process photography of weaving (overhead warp shots, close-up selvedge detail, heddle action) is native to iPhone camera culture and the fiber arts community on Instagram is iOS-dominant. Pinterest boards covering rigid heddle weaving projects and double weave patterns are 72–85% iOS: handweaving inspiration and pattern reference draws overwhelmingly on the iOS-dominant Pinterest demographic. YouTube tutorial channels covering rigid heddle technique — warping, double weave setup, weft sequence walkthroughs — are 58–72% iOS: instructional weaving content is consumed primarily on iPhone and iPad in a home studio. Facebook weaving groups and fiber arts communities are 58–71% iOS. Apple Tax calculation for a rigid heddle double weave Patreon creator at $100/month with 73% iOS membership: $100 × 0.30 × 0.73 = $21.90/month ($262.80/year) paid to Apple from November 1, 2026. At $200/month with 76% iOS: $45.60/month ($547.20/year). At $350/month with 78% iOS: $81.90/month ($982.80/year). Web-only billing at Patreon or moving to a KeepTier web-only subscription page prevents these deductions entirely by keeping all transactions outside Apple's in-app purchase system.

2026-09-19 · ~5,900 words

Rigid heddle double weave produces two simultaneous fabric layers from a single warp on a tabletop loom. The pick-up stick mechanism that separates those layers, the sett arithmetic that makes each layer function at full density, and the shuttle sequence that determines whether you weave a tube, a pocket, or a double-width flat fabric — this is the calibration layer Patreon documentation delivers.

How double weave differs from single-layer weaving on a rigid heddle loom

In single-layer rigid heddle weaving the heddle provides exactly two sheds. Lifting the heddle raises all hole threads above the slot threads, opening the first shed. Pressing the heddle down drops the hole threads below the slot threads, opening the second shed. Passing the shuttle through each shed alternately interlaces the weft with the warp to produce a plain weave fabric. Two sheds are sufficient for plain weave because plain weave requires only two alternating interlacement states: weft over warp at hole-thread positions on the first pass, weft under warp at the same positions on the second pass.

Double weave requires four independently accessible sheds: a top shed and a bottom shed for Layer A, and a top shed and a bottom shed for Layer B. Layer A is woven as a complete plain weave fabric; Layer B is also woven as a complete plain weave fabric; the two fabrics are woven simultaneously in the same warp, interleaved at the thread level, with each layer's warp and weft threads completely independent of the other layer's warp and weft. The two layers share no interlacement points — they are two separate fabrics occupying the same loom space, with Layer A at the front and Layer B at the back, distinguishable only by which shed mechanism opens their respective sheds.

A rigid heddle loom provides two sheds natively. Double weave on a rigid heddle loom requires either adding a pick-up stick to provide a third shed — sufficient for simplified double weave with one-direction layer separation — or adding a second heddle to provide four fully independent sheds sufficient for complete double weave including color exchange. Both approaches produce functional two-layer fabric; the pick-up stick method is accessible on any rigid heddle loom without additional equipment, while the two-heddle method requires a loom with a second heddle carrier position or an auxiliary heddle stand.

The practical implication for Patreon documentation: the pick-up stick method and the two-heddle method have distinct threading sequences, distinct shedding diagrams, and distinct capabilities. A pattern written for one method requires translation before it works on the other. The documentation must specify which setup the pattern is written for, not leave the subscriber to infer it from the threading diagram alone.

Threading the warp for rigid heddle double weave: layer assignment and sett

Warp threading for rigid heddle double weave assigns each warp thread to one of the two layers. In the pick-up stick method, Layer A threads go through the holes in the rigid heddle and Layer B threads go through the slots. The threading sequence alternates Layer A and Layer B positions continuously across the full warp width: the first thread goes through a hole (Layer A), the second through a slot (Layer B), the third through a hole (Layer A), the fourth through a slot (Layer B), and so on across all warp positions. This strict alternating sequence is mandatory — two consecutive hole threads or two consecutive slot threads at any position in the warp breaks the layer separation and causes those threads to interlock across the layer boundary, producing a fabric that cannot be cleanly separated into two independent layers.

Sett for double weave is exactly double the standard single-layer sett for the same yarn. If a yarn weaves well at 10 ends per inch as a single layer at standard plain weave sett, then double weave with that yarn requires 20 ends per inch total — 10 hole threads (Layer A) per inch and 10 slot threads (Layer B) per inch. The reason: each layer in double weave is a complete plain weave fabric that must achieve the correct interlacement density for the yarn used, but each layer occupies only every other warp position across the total warp width. At 20 ends per inch total, Layer A occupies positions 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 — 10 positions per inch in its own fabric plane. Layer B occupies positions 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 — also 10 positions per inch in its fabric plane. Both layers weave at the correct sett.

Warping for double weave: the total warp is measured at the double sett density and threaded with strict hole-slot-hole-slot alternation. For a two-color double weave — Layer A in Color X (face color) and Layer B in Color Y (back color) — Color X threads are warped through the holes and Color Y threads are warped through the slots. The visual result on the loom before weaving is a warp that appears to be a standard warp at the double sett, with alternating colors across the width. Warp length is calculated normally — a 3-meter warp produces both layers at 3 meters of finished length (approximately 2.4 meters after loom waste and take-up), because both layers advance simultaneously at the same rate. The total yardage required is double that of a single-layer project at the same dimensions: each layer uses the full warp length at its single-layer sett, so total warp yards equals twice the single-layer yardage.

Practical calculation example: a 12-inch wide double weave scarf in yarn sett at 8 ends per inch for single-layer weaving. Total warp sett is 16 ends per inch. Total warp ends: 12 inches × 16 ends per inch = 192 ends (96 hole ends for Layer A, 96 slot ends for Layer B). At 3 meters warp length, each layer needs 96 ends × 3 meters = 288 meters per layer, plus loom waste. Total warp yardage: approximately 600–650 meters for both layers.

The pick-up stick: threading sequence and the three accessible sheds

The pick-up stick is a flat, smooth stick — typically 5–8 mm thick, 25–40 mm wide, and long enough to span the full weaving width — that is threaded through the warp from behind the heddle before the first weft pass. The threading procedure: with the heddle in the neutral (centered) position, look at the warp from behind the loom. The alternating hole and slot threads are visible at the back of the heddle. Insert the pick-up stick tip behind the heddle and weave it across the warp by passing over each hole thread (Layer A) and under each slot thread (Layer B), continuously across the full width. When the stick has been threaded across, every Layer B slot thread is held on the underside of the stick and every Layer A hole thread passes above the stick.

The stick rests flat at the back of the loom when not in use. In its flat resting position it creates no shed — the threads above and below it are not separated to a usable angle. When the stick is turned on its edge (stood up so its thin dimension is vertical), it lifts all the Layer B threads it has picked up above the Layer A threads, opening the Layer B top shed. The height of the stick determines the shed depth: a stick 25 mm wide turned on edge opens a 25 mm shed, which is typically sufficient for passing a shuttle through the Layer B warp.

The three sheds available with a single heddle and pick-up stick are:

Shed 1 — Layer A top shed (heddle UP): Lift the heddle to the up position. All hole threads (Layer A) rise above the slot threads (Layer B). Layer A top shed is open. Pass the Layer A shuttle from right to left through this shed. The Layer A weft enters Layer A's fabric plane above Layer B.

Shed 2 — Layer A bottom shed (heddle DOWN): Press the heddle to the down position. All hole threads (Layer A) drop below the slot threads (Layer B). Layer A bottom shed is open. Pass the Layer A shuttle from left to right. The Layer A weft completes one plain weave pick in Layer A.

Shed 3 — Layer B top shed (pick-up stick turned on edge, heddle neutral): Return the heddle to neutral. Turn the pick-up stick on its edge to lift all Layer B slot threads above Layer A. Layer B top shed is open. Pass the Layer B shuttle from right to left. The Layer B weft enters Layer B's fabric plane.

The Layer B bottom shed — the fourth shed needed for complete double weave — requires either a second pick-up stick threaded to lift Layer A above Layer B (the inverse threading: over slot threads, under hole threads) while the heddle is neutral, or a second heddle. In practice many rigid heddle double weave patterns achieve a functional Layer B bottom shed by pressing the heddle down while the pick-up stick lies flat: the hole threads drop below the slot threads, creating a shed that includes both Layer A's bottom position and a partial Layer B separation. The two-heddle method eliminates this approximation.

Two-heddle double weave: four independent sheds

The two-heddle setup positions a second rigid heddle behind the first on the loom's heddle carrier bar or on a secondary holder. Layer A warp threads pass through the front heddle; Layer B warp threads pass through the back heddle. Both heddles are threaded at the same density — the full double weave sett is split evenly between them, with each heddle holding half the total warp count. The threading sequence: Layer A thread through front heddle hole, Layer B thread through back heddle hole, Layer A thread through front heddle slot, Layer B thread through back heddle slot — alternating to maintain strict layer separation while distributing threads across both heddles.

The four sheds available with two heddles:

Shed 1 — Layer A top shed (front heddle UP, back heddle neutral): Front heddle lifts all Layer A hole threads above all other threads. Layer A top shed opens cleanly because the back heddle's threads remain in their neutral position and do not interfere with the shed.

Shed 2 — Layer A bottom shed (front heddle DOWN, back heddle neutral): Front heddle drops Layer A hole threads below all other threads. Layer A bottom shed opens cleanly.

Shed 3 — Layer B top shed (front heddle neutral, back heddle UP): Back heddle lifts all Layer B hole threads above all other threads. Layer B top shed opens fully without any pick-up stick action — the back heddle lift is the only action required.

Shed 4 — Layer B bottom shed (front heddle neutral, back heddle DOWN): Back heddle drops Layer B hole threads below all other threads. Layer B bottom shed opens completely cleanly — this is the shed the pick-up stick method approximates, and it is fully accessible as a clean shed in the two-heddle setup.

The advantage of the two-heddle setup over the pick-up stick method: every shed action is a single heddle lift or press, no stick manipulation per pass, and all four sheds are geometrically symmetric. The fell line advances consistently on both layers. For Patreon documentation, the threading diagram for the two-heddle setup specifies which heddle (front or back) each warp thread passes through, whether it is in a hole or slot of that heddle, and the four-heddle-action sequence for each weft cycle pass.

The physical constraint of the two-heddle setup: the distance between the two heddles affects warp tension and shed geometry. The heddles must be spaced far enough apart that the front heddle's movement does not drag the back heddle's threads, and close enough that the back heddle threads do not angle so steeply through the front heddle slots that they bind. Most rigid heddle looms designed for two heddles specify a minimum separation of 5–8 cm between heddle positions. Looms not designed for two heddles can accommodate a second heddle with a separate stand placed on the loom's back beam, provided the warp angle from the warp beam to the back heddle remains below approximately 20 degrees.

The four-pass weft sequence for an open tube

Weaving double weave in tube configuration requires four successive weft passes per weft cycle, each pass advancing one layer by one plain weave pick. The sequence keeps Layer A weft within Layer A's fabric plane and Layer B weft within Layer B's fabric plane across the full warp width. Two shuttles are used: Layer A shuttle and Layer B shuttle, each carrying the weft color designated for its layer.

Pass 1 — Layer A, top shed: Open Layer A top shed (heddle UP or front heddle UP). Pass Layer A shuttle from the right selvedge to the left selvedge through this shed. The Layer A weft enters above the Layer B warp — it is inside Layer A's fabric plane and above the entirety of Layer B.

Pass 2 — Layer A, bottom shed: Open Layer A bottom shed (heddle DOWN or front heddle DOWN). Pass Layer A shuttle from the left selvedge back to the right selvedge. The Layer A weft now passes below the Layer B warp, completing one plain weave pick in Layer A's fabric. Layer A has advanced by one full pick pair.

Pass 3 — Layer B, top shed: Open Layer B top shed (pick-up stick turned on edge with heddle neutral, or back heddle UP). Pass Layer B shuttle from the right selvedge to the left selvedge. Layer B weft enters Layer B's fabric plane above the Layer B warp threads.

Pass 4 — Layer B, bottom shed: Open Layer B bottom shed (heddle DOWN with pick-up stick flat, or back heddle DOWN). Pass Layer B shuttle from the left selvedge back to the right selvedge. Layer B weft completes one plain weave pick in Layer B. Both layers have now each advanced by one pick pair.

Beat after each pass before opening the next shed. The heddle serves as the beater in rigid heddle weaving — after passing the shuttle, bring the heddle toward the fell, press the weft into place, and return the heddle to neutral before opening the next shed. Beat force must be identical across all four passes. If Layer A passes receive harder or softer beating than Layer B passes, the two layers will accumulate different picks per inch over the length of the warp and arrive at the end of the weave with different lengths. When the tube is opened, one layer will be longer than the other and the finished fabric will buckle along its center.

The fell line in double weave represents the current woven boundary for both layers simultaneously. A periodic fell line check — opening the tube slightly at one selvedge and looking at both layer surfaces — verifies that weft density is consistent across both layers before the discrepancy has accumulated over too many passes to correct without unweaving.

Selvedge management: open, joined, and chained tube edges

Whether the tube's left and right selvedge edges are open or joined is determined entirely by the shuttle behavior at those edges during the four-pass weft cycle. The two shuttle positions at each selvedge at the end of each pass determine whether the layers connect there.

Open selvedge: At an open selvedge, both Layer A and Layer B shuttles turn independently. After pass 2, Layer A shuttle is at the right edge, waiting. After pass 3, Layer B shuttle is also at the right edge. Both shuttles enter from the right for their next outbound pass (passes 4 and 1 respectively) without crossing each other. Neither shuttle wraps around or ties to the other. The right selvedge remains open — the two fabric layers are not connected at this edge, and the edge of each layer is a free selvedge independently.

Joined selvedge: At a joined selvedge, the Layer B shuttle crosses over or under the Layer A shuttle at the edge before entering the next shed. The crossing ties a structural link between the two layers at that selvedge position on every weft cycle. The most common joining convention: after Layer A shuttle exits at the right selvedge (end of pass 2), Layer B shuttle is placed over the Layer A shuttle before entering the Layer B top shed for pass 3, so that the Layer B weft wraps around the outer edge of Layer A's selvedge thread. This wrapping creates a visible selvedge join and structurally connects the two layers at that edge.

Tube with left selvedge joined, right open (double-width configuration): The fabric on the loom is a tube folded at the left selvedge. The right edge is open, with Layer A and Layer B having independent free selvedges. After removing from the loom, the fabric folds open along the left edge to produce a flat piece at twice the weaving width.

Tube with both selvedges open (split weave): Both shuttles turn independently at both edges. The result is two completely separate fabric layers being woven simultaneously on the same loom — a split weave configuration. This is useful for weaving two projects simultaneously (two scarves from one warp at one-quarter the warping time per project), or for weaving a tube that will be opened by cutting one selvedge after finishing.

Tube with both selvedges joined (fully closed tube): Both shuttles cross each other at both the left and right edges on every weft cycle. The fabric is a fully enclosed tube — the weaver must open the tube from inside by reaching in from the loom beam end to retrieve the shuttles on alternating passes. Fully closed tube weaving is used for seamless tubular structures such as round placemats and cylindrical pouches, but the shuttle management is demanding and most rigid heddle weavers prefer the single-joined-selvedge configuration for projects that can tolerate one raw edge.

Double-width flat fabric: opening the tube after weaving

The double-width technique uses the joined-left-open-right tube configuration to produce a flat fabric at twice the heddle's weaving width. The ceiling on weaving width imposed by the rigid heddle's maximum warp spread is the most significant constraint for rigid heddle weavers; double-width weaving lifts that ceiling by a factor of two, making it practical to produce towels, lap blankets, wide scarves, and table runners on a narrow-width loom without piecing or seaming two separate fabrics.

Setup for double-width weaving: warp the loom to the full heddle weaving width at double sett. Thread Layer A in holes, Layer B in slots. Configure the left selvedge as joined and the right selvedge as open. Weave the full desired length at the four-pass weft cycle. The fabric that builds on the loom is a folded tube — what appears to be a single layer of fabric on the loom face is actually two layers folded face-to-face, with the fold at the left selvedge.

After weaving: remove the fabric from the loom and open the fold. The fold opens by pressing the left selvedge flat and allowing the two fabric layers to separate naturally along their full length. The finished flat fabric is twice the weaving width, with the left selvedge fold line running down the center. The left fold edge is a clean woven selvedge requiring no finishing — it is structurally a selvedge thread shared by both layers at their join point. The right open edge consists of two separate raw selvedge edges (Layer A's right selvedge and Layer B's right selvedge, independent of each other) that require finishing: hemming, folding, overcasting, or fringe attachment.

Finished width calculation: weaving width on loom × 2 × (1 minus draw-in percentage). Draw-in in double weave is typically 8–12% per layer, consistent with single-layer draw-in at the same sett. A 14-inch weaving width with 10% draw-in produces a finished width of approximately 14 × 2 × 0.90 = 25.2 inches. The opened-fabric width is approximately 25 inches. Length calculation follows standard single-layer take-up: 15–20% shrinkage from warp length to finished length for balanced plain weave in wool or cotton.

The critical quality check for double-width fabric: the two half-panels of the opened fabric must match in weft density. If Layer A and Layer B received different beat force during weaving, they will have different picks per inch and different finished lengths. The shorter half-panel will pull the finished fabric off-grain along the center fold line. Prevention: beat each of the four passes with identical force; verify fell line evenness at both layer surfaces every 10–15 weft cycles during weaving.

Pocket construction: joining layers at specific weft rows

A pocket in rigid heddle double weave is formed by weaving one or more joining rows at a specific weft position that interlaces a single weft with both Layer A and Layer B warp threads simultaneously. The joining row creates a structural seal between the two fabric layers at that position — the two layers, which were progressing independently through the four-pass cycle above and below the joining row, are pinned together at that row's position across the full width. The joining row becomes the bottom edge of a pocket when placed at the start of a pocket section, or the top edge when placed at the end.

Executing the joining row: open a combined shed that includes all Layer A and Layer B threads simultaneously. In the pick-up stick method, this is done by lifting the heddle UP while simultaneously turning the pick-up stick on its edge — both Layer A hole threads and Layer B slot threads rise together, and a single weft passed through this combined shed interlaces across the full two-layer warp. In the two-heddle method, lifting both the front heddle and the back heddle simultaneously achieves the same combined all-layer shed. Pass one shuttle through this combined shed with standard beat. This single pick is structurally part of both Layer A and Layer B, joining them at that weft row.

Pocket structure for a woven-in pocket in a scarf: the main scarf body is woven as a split weave (both selvedges open, fully independent layers). At the pocket start position, weave one joining row (combined-shed pick). Switch to a one-side-joined configuration for the pocket body: left selvedge joined, right selvedge open (or the reverse, depending on which face the pocket mouth should open on). Weave the pocket depth in standard four-pass cycle — the joined left selvedge forms the pocket's closed side; the open right selvedge is the pocket mouth. At the pocket end position, weave one joining row to close the pocket. Resume the split weave above the pocket. The result is a scarf with a horizontal pocket whose mouth opens on one side, enclosed on three sides by the two joining rows and the joined selvedge.

Pocket depth is measured in weft picks: 40 four-pass cycles at 15 picks per inch per layer produces a pocket approximately 2.7 inches deep. Pocket width is the full weaving width for a full-width pocket. A partial-width pocket requires selectively opening only the pocket-width portion of the warp for the joining rows and the tube section, which demands a pick-up stick cut to the pocket width — technically more demanding but achievable with patient pick-up stick threading for the pocket segment only.

Pocket joining row count: one joining row per pocket end produces a clean join that is structurally sound for light-use pockets (scarf pockets, decorative pouches). Two or three joining rows per pocket end produces a more durable join suitable for bag construction where the pocket seam is load-bearing.

Color exchange and block design in rigid heddle double weave

Color exchange double weave uses two different warp colors — one for Layer A (face) and one for Layer B (back) — and exchanges which layer appears on the fabric face at specific warp column positions. Where the layers are not exchanged, Layer A color is on the face and Layer B color is hidden on the back. Where the layers are exchanged, Layer B color comes to the front and Layer A color moves to the back, creating a contrasting color block on the face fabric visible from the outside.

The exchange mechanism is a threading change, not a weaving change. At an exchange column position in the warp, the Layer A thread (which was in a hole in the front heddle, or a hole in the single heddle) moves to the back-layer position, and the Layer B thread moves to the front-layer position. After the exchange column, the thread that was formerly Layer B is now woven as part of the face fabric — its color appears on the face from the exchange column onward until the next exchange point reverses the assignment. The block pattern is committed at the warping stage.

In single-heddle pick-up stick double weave, a color exchange requires re-threading the affected warp threads from hole to slot and from slot to hole at the exchange column. In a two-heddle setup, the exchange appears as a thread that switches from front heddle to back heddle threading (and vice versa) at the exchange column. The two-heddle threading diagram makes exchange points visually clear — the column where a thread crosses from front heddle to back heddle is the exchange boundary, and the block width is the number of thread positions between two exchange boundaries.

Weft color management for color exchange double weave: the face and back weft colors should match the face and back warp colors for a clean, solid block design. If Layer A warp is Color X and Layer B warp is Color Y, using Color X weft for Layer A passes and Color Y weft for Layer B passes produces a face fabric in pure Color X at non-exchange blocks and pure Color Y at exchange blocks, with the back fabric showing the inverted pattern. If both layers use the same weft color, the face of each block will show the face warp color (correct) but the back will show a mixed-color weave structure (face warp color interlaced with the shared weft color), which is visually correct only if the shared weft color matches both layer colors.

For Patreon color exchange pattern documentation: the full threading draft must show every warp position, the layer assignment of each thread, and the column position of every exchange point. A warp photograph from directly above the heddle, showing the thread order and color alternation, is the documentation reference that allows subscribers to verify their threading before weaving begins.

Weft arc, beat consistency, and fell line maintenance in rigid heddle double weave

The weft arc technique (also called bubbling) is the practice of angling or curving the weft across the open shed before beating, to ensure that the weft has enough length to travel over and under the warp threads without pulling in the selvedges. In single-layer rigid heddle weaving, a moderate arc — angling the weft at 20–30 degrees above the fell line before pressing it into place with the heddle beater — is standard practice for maintaining selvedge integrity.

In double weave, the arc applies per pass: each of the four passes in the weft cycle requires its own arc, because each pass goes through a shed that contains only half the total warp threads (Layer A's half or Layer B's half). The warp thread count per shed in double weave is half the total, which means the weft's under-and-over path in each shed involves fewer interlacement points per inch than a single-layer fabric at the same total warp density. The weft arc for double weave is therefore slightly smaller per pass than for single-layer weaving at the total sett — the weft needs slightly less extra length to travel its path across the half-density shed. In practice: use the same arc discipline as single-layer weaving but watch the selvedges for the first 5–10 weft cycles, and reduce the arc slightly if the selvedges are pulling in or increase if the fabric is drawing in at the first-beat position.

Beat force calibration: the heddle contacts both Layer A and Layer B warp threads simultaneously when pressed toward the fell, even when only one layer's shed is open. The result is that beat force acts on both layers at every pass. The total warp thread count in the shed opening — half for each layer — means the physical resistance to the heddle's forward motion is similar to single-layer weaving at the full combined sett. Do not adjust beat force up or down between Layer A passes and Layer B passes. The discipline is identical beat pressure on every one of the four passes per cycle.

Fell line monitoring: open the tube at one selvedge every 20–30 weft cycles and inspect both layer surfaces. Both layers should show identical pick spacing — equal gaps between weft picks across the full width of each layer. A layer that shows denser packing (smaller gaps) received heavier beating; a layer that shows looser packing received lighter beating. Correct by adjusting beat force on the lighter-beaten layer's passes immediately. Early detection prevents the accumulated layer-length discrepancy that causes finished-fabric buckling.

Finishing rigid heddle double weave fabric: hemming, fringe, and opening the tube

Finishing decisions for rigid heddle double weave fabric depend on the construction type. For a double-width flat piece, finishing the open raw selvedge edge is the primary task. The open selvedge consists of two separate raw edges (Layer A and Layer B) at the same position along the right side of the opened fabric. Several options: fold both raw edges inward by 1.5 cm and machine-stitch or slip-stitch the fold — this produces a clean hemmed edge on both surfaces; or fold the raw edges inward and sew the two layers together at the fold line to produce a single clean edge visible on both the face and the back of the fabric; or align the raw edges and attach fringe by threading the hem allowance threads into fringe knots across both layers simultaneously.

For tube construction (scarf, cowl, or bag tube), the tube is finished with the joined selvedge intact as the structural fold or join. The cast-on and cast-off ends of the tube (the warp fringe or hem) require finishing at each tube end. Hem at each end: press each tube end flat (joined selvedge on one side, open selvedge on the other), fold under by 1.5 cm, and machine-stitch or hand-stitch through both layers simultaneously. Fringe at each end: thread the warp fringe into paired knots through both layers at the hem position, treating Layer A and Layer B fringe threads as a combined unit at each fringe position.

Wet finishing rigid heddle double weave: most double weave projects benefit from washing after weaving to bloom the yarn, set the weave structure, and allow the fabric to achieve its finished hand. Washing procedure is the same as for single-layer fabric in the same fiber type — hand wash in cool water for wool, machine wash gentle for cotton, gentle cycle for linen. The key double weave consideration: wash the fabric as a tube before opening (if opening post-wash) to ensure both layers wet and dry together and achieve the same shrinkage. Opening the tube before washing may cause one layer to shrink differently than the other if the layers are under different tensions during drying.

Patreon content strategy for rigid heddle double weave creators

Rigid heddle double weave Patreons retain subscribers when documentation addresses the four decisions that finished-cloth photographs cannot convey: the layer threading assignment (which warp threads are in which layer and which heddle position), the shedding sequence (which heddle action produces which layer's shed), the selvedge assignment (which edges are joined and which are open), and the weft sequence (the four-pass order and the shuttle direction at each selvedge for each pass). These four decisions determine whether the subscriber produces an open tube, a double-width flat fabric, a pocket, or a split weave — and they cannot be inferred from the finished cloth photograph, because all four construction types can produce finished fabric that looks identical on the face.

The minimum documentation set for any rigid heddle double weave Patreon pattern: total warp end count (explicitly stated as double the single-layer count, with the layer assignment of holes vs slots specified), the sett in ends per inch for the total warp, the shedding sequence for the chosen method (heddle UP / DOWN / pick-up stick sequence for single-heddle method, or front heddle / back heddle sequence for two-heddle method), a diagram showing the shuttle entering and exiting each of the four sheds with the shuttle direction clearly indicated at each selvedge edge, and the selvedge joining convention (left joined and right open, right joined and left open, both open, or both joined) with the reason stated.

The highest-performing Patreon tier structure for rigid heddle double weave documentation: a $15–$25/month project tier including one or two complete double weave projects per month with full threading draft, shedding sequence notation, selvedge management diagram, and a mid-project photograph showing the tube opened at one selvedge so both layer surfaces are visible simultaneously — allowing subscribers to verify their selvedge management and beat consistency before committing the rest of the warp length. A $40–$65/month intensive tier offering threading draft review: the subscriber submits a photograph or diagram of their planned warp threading before warping the loom, receiving feedback on layer assignment accuracy, exchange point placement for block designs, and sett verification for the yarn. Threading errors in double weave discovered before warping are a five-minute correction; discovered after warping they require stripping and re-threading the full warp, which represents 2–3 hours of lost preparation work. The intensive tier commands premium pricing because it converts a catastrophic potential error into a routine pre-flight check.

Supplementary content that retains double weave subscribers at high monthly tiers: warp color planning tools (a simple grid showing face and back warp colors at each threading position and the resulting face block pattern after exchange), video documentation of the pick-up stick threading procedure (the most spatially confusing step for new double weave weavers, and the one most likely to be threaded incorrectly), and finished-cloth analysis comparing correct double weave tube (both layers independent and equal) against common threading errors (two consecutive hole threads producing layer interlock, uneven beat producing layer length mismatch). Each of these content types describes a structural decision that the finished photograph obscures — which is the consistent characteristic of the highest-value Patreon documentation in any craft domain.

The Apple Tax on rigid heddle weaving audiences from November 2026

Rigid heddle weaving audiences are iOS-concentrated across every platform where weaving documentation is consumed and discovered. Instagram accounts covering rigid heddle weaving technique — warping tutorials, double weave construction clips, finished cloth and selvedge detail photography — are 70–83% iOS: the visual format of weaving process documentation (overhead warp arrangement photographs, close-up cloth texture, heddle position videos) is native to iPhone camera culture and the fiber arts community on Instagram is iOS-dominant. Pinterest boards covering rigid heddle projects, double weave patterns, and handweaving inspiration are 72–85% iOS: pattern research and technique reference in the handweaving space on Pinterest draws heavily on the iOS-dominant Pinterest app demographic. YouTube tutorial channels covering rigid heddle technique — step-by-step warping, double weave setup, pick-up stick threading — are 58–72% iOS: instructional weaving content is consumed primarily on iPhone and iPad in a home studio environment where the device is propped on the loom stand for reference during setup. Facebook weaving groups and fiber arts communities where rigid heddle double weave questions and project photographs are shared regularly are 58–71% iOS.

Apple Tax calculation for a rigid heddle double weave Patreon creator at $100/month with 73% iOS membership: $100 × 0.30 × 0.73 = $21.90/month ($262.80/year) paid to Apple from November 1, 2026. At $200/month with 76% iOS: $45.60/month ($547.20/year). At $350/month with 78% iOS: $81.90/month ($982.80/year).

These are the contractual consequences of Patreon's agreement with Apple effective November 1, 2026, applied to every iOS subscription billing cycle from that date. A rigid heddle weaving creator at $200/month who does not switch to web-only billing loses over $547/year to Apple — enough to cover a second rigid heddle loom, a full yarn stash for multiple warp projects, or an intensive weaving workshop registration. The web-only billing switch at Patreon directs iOS subscribers to subscribe through the Patreon website instead of the iOS app, removing the transaction from Apple's in-app purchase system. KeepTier provides the alternative for creators who want their membership entirely off Patreon: a web-only subscription page with Stripe Checkout, Discord role automation, zero platform fee beyond Stripe processing, and a custom domain — retaining the full subscriber revenue that Apple would otherwise deduct.

Frequently asked questions

What is the pick-up stick in rigid heddle double weave and how does it create a second independent fabric layer?

The pick-up stick is a flat smooth stick threaded across the warp behind the heddle by weaving it over each Layer A hole thread and under each Layer B slot thread. When the stick lies flat it creates no shed. When it is turned on its edge it lifts all the Layer B slot threads it holds above the Layer A hole threads, opening the Layer B top shed — a shed independent from both the heddle-up and heddle-down sheds which act only on Layer A hole threads. The three resulting sheds are: Layer A top (heddle UP), Layer A bottom (heddle DOWN), and Layer B top (pick-up stick on edge, heddle neutral). These three sheds, used in sequence with two shuttles — one per layer — allow two independent fabric layers to advance simultaneously on the same warp. The pick-up stick stays at the back of the loom between sheds and is turned on its edge only for Layer B top shed passes. A full Layer B bottom shed requires either a second pick-up stick threaded with the inverse selection or a second heddle; the two-heddle method provides all four sheds cleanly without any stick manipulation per pass.

How is the sett calculated for rigid heddle double weave, and why does each layer weave at half the standard single-layer sett?

Sett for rigid heddle double weave is exactly double the single-layer sett for the same yarn. If the yarn weaves well at 10 ends per inch for single-layer plain weave, double weave requires 20 ends per inch total — 10 hole ends (Layer A) per inch and 10 slot ends (Layer B) per inch. The reason is that each layer occupies only every other warp position across the total warp width, so at 20 total ends per inch, each layer still has 10 ends per inch in its own fabric plane. A total density below double the single-layer sett means each layer is too open; above double means each layer is too dense for the heddle to open cleanly. Practical calculation: for a 12-inch double weave project in yarn sett at 8 epi single-layer, total warp count is 12 × 16 = 192 ends (96 hole ends for Layer A, 96 slot ends for Layer B). Total warp yardage is approximately double the single-layer yardage for the same project dimensions, because each layer uses the full warp length at the single-layer density.

What is the four-pass weft sequence for weaving an open tube in rigid heddle double weave, and how does shuttle direction at each selvedge determine whether the tube is open or closed?

The four-pass sequence per weft cycle is: (1) Layer A top shed — Layer A shuttle right to left; (2) Layer A bottom shed — Layer A shuttle left to right; (3) Layer B top shed — Layer B shuttle right to left; (4) Layer B bottom shed — Layer B shuttle left to right. Beat after each pass. Whether each selvedge edge is open or joined depends entirely on whether the two shuttles cross at that edge. At an open selvedge, both Layer A and Layer B shuttles turn independently — neither crosses over the other — and the two layers are unconnected at that edge. At a joined selvedge, Layer B shuttle crosses over Layer A shuttle at the edge before entering the Layer B shed, wrapping Layer B's weft around Layer A's outer selvedge thread and locking the two layers together at that position. A tube with the left selvedge joined and right open is the standard double-width configuration: after weaving and removing from the loom, the fabric unfolds at the left join to produce flat fabric at twice the weaving width. A tube with both selvedges open produces two completely independent layers woven simultaneously (split weave).

How does the double-width technique in rigid heddle double weave produce a fabric wider than the loom's maximum weaving width?

The double-width technique warps the loom to its full weaving width at double sett, threads for double weave with strict hole-slot alternation, and weaves with the left selvedge joined and the right selvedge open. The fabric on the loom is a tube folded at the left selvedge — what appears to be a single layer on the loom face is two layers folded face-to-face. After removing from the loom, opening the left fold reveals a flat fabric at twice the weaving width: a 15-inch loom produces approximately 28–30 inches of finished width (after draw-in). The left fold edge is a clean woven selvedge requiring no finishing; the right open edge consists of two separate raw selvedges (Layer A and Layer B) requiring hemming or fringe. The critical quality requirement is beat consistency: Layer A and Layer B passes must receive identical beat force to ensure both layers have the same picks-per-inch and the same finished length — mismatched lengths cause the opened fabric to buckle along the center fold line.

What is the Apple Tax on rigid heddle weaving Patreon audiences from November 2026, and what are the specific monthly amounts at typical creator income levels?

Instagram rigid heddle weaving accounts 70–83% iOS; Pinterest rigid heddle and handweaving boards 72–85% iOS; YouTube rigid heddle tutorial channels 58–72% iOS; Facebook weaving groups 58–71% iOS. Apple Tax deductions on Patreon iOS subscriptions from November 1, 2026: at $100/month with 73% iOS, $21.90/month ($262.80/year); at $200/month with 76% iOS, $45.60/month ($547.20/year); at $350/month with 78% iOS, $81.90/month ($982.80/year). Web-only billing at Patreon or moving to KeepTier's web-only subscription page prevents these deductions by keeping all transactions outside Apple's in-app purchase system.

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