Patreon for goldwork embroidery creators: Japanese gold couching mechanics, purl types, Or Nué technique, padding systems, mellor and slate frame, Opus Anglicanum and Byzantine historical lineage, tier structures, and Apple Tax impact on iOS creator revenue
2026-07-25 · ~4,600 words · KeepTier
Goldwork embroidery occupies a unique position among craft instruction niches on Patreon: it is simultaneously one of the most visually spectacular embroidery traditions (the reflective metallic surface catches light in ways that no other needlework medium does), one of the most historically documented (surviving examples span fifteen centuries from Byzantine Constantinople through medieval Opus Anglicanum to contemporary Royal School of Needlework commissions), and one of the most technically specific in its material requirements. You cannot substitute cotton floss for Japanese gold thread; you cannot fake the purl type hierarchy with a different metallic material; you cannot achieve Or Nué shading without genuine laid gold and specific-color silk couching — the technique is precisely married to its materials in a way that creates an unusually high-value instructional proposition. Patrons paying for goldwork instruction are paying for the specific procedural knowledge of how these materials behave, how to prepare a slate frame so the metallic threads lie flat, how to cut purl without crushing the coil, how to build padding layers so the felt profile slopes correctly, and how to plan an Or Nué cartoon so the couching density map matches the pictorial value range they are trying to achieve. None of this is documented in accessible form elsewhere. YouTube goldwork tutorials exist, but they compress the critical mechanical decisions — why this purl size rather than the alternative, how to determine the couching interval on a tight curve, what happens to felt padding when the felt fibers align against the fabric grain rather than on the bias — to a level of detail that does not transfer to independent practice. This is exactly the documentation gap that Patreon goldwork creators fill, and why the retention in this niche is high.
The core commercial insight for goldwork Patreon creators is that the technique's visual results are so distinctive that finished work photographs exceptionally well, creating strong social media content that naturally draws an audience who then discovers that the technique is genuinely difficult to learn without instruction. The metallic surfaces catch directional light in photographs in a way that reads as immediately aspirational even to viewers who know nothing about the technique. Instagram goldwork accounts regularly develop large followings on the strength of process photography alone — the moment when rough purl chip work fills a padded shape to produce a jewel-like textured surface, or when pearl purl is stretched and couched into a tight spiral, or when a laying of paired Jap gold rows resolves from a pile of loosely held metallic thread into a smooth metallic surface. These visual moments are the hook; the technical depth of the instruction is what converts followers into long-term paying patrons.
Japanese gold thread: construction, types, and couching mechanics
Japanese gold — Jap gold, passing thread, or kinkaku in its traditional Japanese form — is not a wire. This distinction matters practically and not just terminologically: the misconception that goldwork embroidery uses metal wire explains most of the confusion beginners bring to their first Jap gold handling experience. Jap gold is a textile thread with a metallic surface. Its construction: a fine silk or synthetic core thread (approximately 0.1–0.2mm diameter) is wrapped in a tight, regular helix with a very narrow strip of metallic material (historically pure gold beaten to sheet and slit into strips; contemporary Jap gold uses a gold-coloured lacquered metallic foil approximately 0.2–0.4mm wide wound at a 45-degree helix angle onto the core). The result behaves like a thread in terms of flexibility — it bends without cracking, curves without kinking, and can be held between the fingers and guided into position — while presenting a completely metallic surface when the helix wrapping is viewed perpendicular to the thread axis.
The helix angle of the wrapping determines the thread's visual character: a steep helix angle (wrapping close together) produces a brighter, more uniformly metallic appearance; a shallower angle (wrapping with slight gaps) produces a slightly textured appearance where the core shows at oblique angles. Traditional Japanese kinkaku uses real gold foil; contemporary production Jap gold (Benton and Johnson, creative-Miriam, Macleod Craft Management) uses lacquered metallic polyester film on a cotton or polyester core. The practical difference matters for aging: real gold does not tarnish; metallic film tarnishes over decades. For embroidery intended for long-term archival use (ecclesiastical commissions, commemorative pieces, museum study pieces), the gold-film composition should be checked against the supplier's technical specification.
Couching mechanics: Jap gold is always laid in double threads — two threads simultaneously, side by side. Single-thread laying is technically possible but produces a different visual character (the two-thread laying creates a brick-pattern effect as couching stitches from alternating rows offset from each other, which is the standard goldwork surface texture). The double threads are uncoiled from their spools and placed on the fabric surface in the chosen direction; the first couching stitch is placed approximately 2–3mm from the beginning of the run. Couching thread: yellow silk (traditionally), or two strands of yellow stranded cotton (DMC 783 or 729 for most Jap gold; DMC 3852 for warmer or antique gold tones). The couching stitch passes under the pair of Jap gold threads and the needle re-enters the fabric at 90 degrees to the thread pair direction — perpendicular couching is the rule; angled couching creates visible stitch lines in the gold surface. Interval on straight lines and gentle curves: 3–4mm. On curves with a radius below 5mm: reduce to 1.5–2mm. At sharp corners: the Jap gold pair is turned at the corner point with an additional couching stitch exactly at the apex, then the pair continues in the new direction.
K1 and K2 designate thread weight within the Jap gold family: K1 is finer (approximately 0.5mm diameter per single thread; 1.0mm pair when laid together), used for fine detail areas and small curves where heavier thread would exceed the design space or refuse to bend sufficiently; K2 is heavier (approximately 0.65mm per thread; 1.3mm pair), used for bold area fills, border lines, and work where visual weight and impact are more important than fine detail. Passing thread is finer than K1 Jap gold and tighter-wound; it is used where a hair-fine metallic line is required — precise outlines of small design elements, fine vein lines in leaves, or decorative stitching on the front of the fabric where the thread must go through the eye of a fine needle.
Purl types: rough, smooth, check, pearl, and chip work mechanics
Purl is the family of goldwork threads made from fine metallic wire wound tightly into a spring coil. Unlike Jap gold, which is couched along the fabric surface, purl can be cut into short segments and treated like a metallic bead — each piece is threaded on the needle, the needle taken through the fabric, and the purl segment left resting on the fabric surface between the needle's two entry and exit points. This chip work application produces the dense, encrusted metallic surface of the most technically demanding goldwork pieces. The four principal purl types produce radically different optical effects from the same metallic base material.
Rough purl (RP): wire wound with a slightly irregular, matte-textured surface finish — the wire's drawing marks create micro-irregularities that scatter incident light in multiple directions rather than reflecting it at a single angle. The result is a soft, non-reflective, warm-textured gold surface. Rough purl reads well at medium and long viewing distances because its texture creates consistent visual density; close-up, it has an almost velvet-like quality compared to the other purls. Rough purl chip work is the most forgiving purl for beginners because the matte surface disguises slight inconsistencies in cut-piece length and placement. Standard chip work cutting method: hold the purl coil vertically between the left thumb and index finger with 4–5mm extending beyond the finger grip; cut with sharp embroidery scissors (manicure scissors, not fabric scissors — the narrow blades allow controlled cutting close to the coil structure) at the desired length. The cut must be clean and perpendicular to the coil axis — a diagonal cut produces a piece with one end wider than the other, which causes it to tilt when stitched. The desired chip length for fill work: 3–5mm for standard filling; 2–3mm for tight curves and small design areas; 1–2mm (micro-chip work) for fine detail.
Smooth purl (SP): wire wound with a polished, mirror-smooth surface. Every coil face is a flat reflective plane, and when the coil is viewed from a consistent angle, the smooth purl surface produces an intense, directional reflection — high gloss, high contrast. Smooth purl cut chips produce bright metallic segments that read differently from rough purl in the same lighting condition: where rough purl scatters, smooth purl reflects. The classic goldwork fill technique alternates rough and smooth purl chips in a checkerboard or alternating-row pattern to create a 'bright and shade' surface — patches of matt gold adjacent to patches of bright reflection, the combination producing more visual complexity than either material alone.
Check purl (CP): wire wound from wire that has been mechanically faceted — kinked at regular intervals along its length before winding — so that the wire surface is covered in tiny flat facets at slightly different orientations. When the spring is wound, these facets appear on the outer surface of the coil at multiple angles simultaneously. Under directional light, each facet reflects a point of bright light from its own specific orientation, producing a scintillating multi-sparkle effect rather than the uniform glow of smooth purl. Check purl is the highest-impact purl for use where maximum visual intensity is needed: crown points, jewel centres, concentrated focal areas, the centre of a floral motif. Its scintillation is visible at greater viewing distances than smooth purl reflection, making it valuable for pieces intended to be seen from across a room (altar frontals, vestment panels, commemorative banners).
Pearl purl (PP): structurally distinct from the chip purls. Pearl purl is a spring-wire coil that is stretched before application, creating gaps between the wire coils. The stretched pearl purl is then laid along a design line and couched in place, with the couching stitches (in matching thread) dropped invisibly into the gaps between coils. The effect from above: a continuous row of tiny connected spheres — a beaded line without actual beads, produced entirely by the curved outer surfaces of the wire coil as seen from above. Pearl purl sizes 1 (finest, approximately 0.7mm diameter when stretched) through 4 (heaviest, approximately 2mm) provide a range from hair-fine outline work to heavy border frames. The stretching ratio determines the bead appearance: 15–25% stretch from natural coil length produces a gap just wide enough for the couching thread to lie flat without showing above the pearl purl surface. Overstretched pearl purl shows thread in the gaps; understretched pearl purl's coils sit flush and do not accept the couching thread without distortion. The test for correct stretch: thread the couching needle, lay the stretched pearl purl on a scrap of fabric, attempt one couching stitch — if the stitch drops between the coils without displacing them, the stretch ratio is correct.
Or Nué: planning and executing shaded gold
Or Nué is the most technically demanding and historically significant goldwork technique: the combination of pictorial image-making with continuous metallic surface that defines 15th-century Flemish court embroidery and appears in ecclesiastical garments across European collections. The technique works by using the couching thread over laid gold threads as the pictorial medium — the gold itself provides the ground luminosity, and the distribution of colored silk couching threads provides the image. Understanding Or Nué requires understanding that the 'painting' happens with couching stitches, not with the gold thread itself, which is uniform throughout the entire design area.
The starting process: prepare a full-scale cartoon at 1:1 with the design. Trace the cartoon onto fabric paper or lightly mark it on the working fabric through a transfer window. Mount the fabric in a slate frame (not a hoop — the full flatness of the slate frame is necessary to maintain the consistent row spacing that Or Nué requires). Begin laying horizontal rows of Jap gold thread in pairs across the full width of the design area. The gold rows are held in place by the couching process itself — they are not pre-attached separately. The couching thread for each row is a different colour matching the pictorial element at that point in the image. In a background area: yellow couching thread, one stitch every 5–6mm. In a transitional area moving from bright gold into a flesh tone: yellow couching at wider intervals near the gold area; warm peach couching at closer intervals toward the shadow. In a deep shadow area of a face: brown or dark mauve couching at 1–1.5mm intervals, covering the gold surface almost entirely so only the silk colour is visible.
The couching density map is the most important preparatory document for an Or Nué project. It translates the value (light-to-dark) range of the image into a numerical couching interval: bright highlights = gold couching every 6–8mm (gold almost entirely visible); mid-tones = coloured couching every 3–4mm; shadows = coloured couching every 1.5–2mm (gold mostly hidden). The maximum range — from 1.5mm to 8mm couching intervals — produces a value range from near-solid colour to near-solid gold, equivalent to the full value range in the original pictorial reference. Colour in Or Nué is additive: the gold beneath the silk couching warms any colour placed over it, so pure cool colours (blue-black shadows, pure white highlights) require compensation in the couching thread colour selection — a shadow that should appear cool grey-blue uses slightly warmer blue couching than the final target, because the gold warms it back toward neutral.
Padding systems: felt, string, card, and chip work fill
Goldwork embroidery is a three-dimensional medium. The primary visual vocabulary of goldwork — the raised, jewel-like quality of the best ecclesiastical and commemorative pieces — comes from the systematic elevation of the metallic surface above the fabric plane through padding layers. Understanding the three padding systems and when to use each is the structural foundation of goldwork technique education.
Felt padding: used for smooth domed relief from 2mm to 8mm above fabric plane. The working principle is a diminishing stack of felt cutouts: the design element is cut from yellow wool felt at full size; the same design minus a 2–3mm border all around is cut; a third piece minus another 2–3mm is cut; if deeper than 6mm is needed, a fourth piece is added at the center. The smallest piece is stitched to the fabric first, centered within the design area, using a radial stitch pattern that enters the felt near its center and exits at the edge (preventing felt fibers from pulling out under subsequent layer compression). Each subsequent larger piece is stitched on top, nesting the previous layers within. The result is a smoothly sloped dome when viewed in profile — the couched gold threads over a correctly built felt pad read as a convex metallic hemisphere, catching directional light and dropping strong shadows at the slope edge that emphasize the dimensional quality.
String padding: used for linear raised ridges in parallel band patterns. Stout white cotton string (perlé #5 or twisted cord 2–3mm diameter) is stitched to the fabric in parallel rows, each row touching its neighbor. When the string rows are covered with goldwork couching threads, the result is a corrugated metallic surface — the sequence of raised ridges produces a striped light-and-shadow pattern that resolves from a distance as a uniform metallic field but reads at close range as a textured, dimensional surface. String padding is the standard technique for the raised bands on liturgical vestment decoration — orphrey bands, dalmatic orphreys, cope borders — where long linear sections must maintain consistent rise without the weight of heavy felt layers.
Card or vellum padding: for maximum architectural relief. A piece of heavy cartridge paper or thin card is cut to the design shape, and small holes are punched around its perimeter with a stiletto or awl at 4–6mm intervals. The card is stitched to the fabric through these perimeter holes, rising flat above the fabric surface at the card's own thickness (0.5–1.5mm for card; up to 3mm for multiple card layers). Purl chip work or closely couched goldwork is then applied over the card face, with each chip piece passing through the fabric at the card edge and resting across the card face. The card prevents the metal from being pulled flat to the fabric surface by the couching stitches, maintaining the full card-thickness relief. Card padding produces the sharpest, most architecturally precise relief edges — where the other padding systems produce smoothly curved profiles, card padding produces a clean-cut silhouette with a vertical edge face that must itself be treated (wrapped with purl or fabric) if the edge is visible from the viewing angle.
Tools: mellor, purl scissors, frame, and transfer tools
The mellor is the tool specific to goldwork that has no equivalent in other embroidery traditions. It is a thin, curved metal implement resembling a fine dental tool — a slender shaft with a slightly flattened, smooth-edged tip at one end and often a second tip (pointed or angled differently) at the other. The mellor's primary use is as a manipulating and blending tool: when Jap gold threads are couched into position, the mellor tip is used to nudge individual gold threads sideways into closer registration without using the fingers (which would leave skin oil on the metallic surface). The mellor also presses couching stitches to position after the stitch is tightened, sliding between adjacent gold threads to push a couching stitch into exact perpendicular alignment. In chip work, the mellor tip positions cut purl pieces onto the fabric surface after threading on the needle and before the needle enters the fabric — this allows precise placement of small chip pieces without the finger obscuring the target area.
Purl scissors (sometimes called snips or embroidery scissors in a fine point) must be sharp enough to cut wire cleanly. Dull scissors crush the purl coil as they cut, producing a deformed end that makes the chip piece sit at an angle when stitched. Manicure scissors with narrow blades work well; the primary criterion is a clean, perpendicular cut on the thinnest wire purl sizes (size 2 rough purl in particular, which has finer wire than the heavier sizes). Cutting test: a correctly cut purl piece produces a clean circular end face with no crushing or deformation; the first coil at each cut end should be round in cross-section, not oval.
The slate frame is mandatory equipment for serious goldwork — not optional, not replaceable with a standard embroidery hoop. A hoop holds fabric by compressing a single ring against a fixed ring, which distorts the fabric grain and allows the fabric to move or rotate within the hoop under the tension of metallic thread laying. A slate frame holds fabric by rolling the top and bottom edges onto rollers (dressed with a webbing to which the fabric edges are sewn), then lacing the side edges taut with cord through a series of holes in the side bars, producing a uniformly tensioned, flat surface that remains stable even under the directional stress of multiple Jap gold rows being laid across it. The fabric must remain absolutely flat throughout goldwork — the slightest puckering of the base fabric permanently distorts the metallic surface above it.
Historical lineage: Byzantine to Opus Anglicanum to Or Nué
Goldwork embroidery's earliest surviving European examples are Byzantine — the textile workshops of Constantinople in the 6th through 11th centuries produced ecclesiastical vestments and imperial court dress with goldwork at a level of technical refinement that represents the peak of a tradition that had already been developing for centuries. The Byzantine vestments in the Vatican Treasury, the Bamberg vestments (Munich Residenz, 11th century), and the fragments in the Dumbarton Oaks and Byzantine and Christian Museum collections show paired Jap gold couching in concentric rows, early Or Nué-progenitor techniques with silk couching creating tonal variation over gold grounds, and a precision of technique that indicates multi-generational specialist workshop transmission.
Opus Anglicanum — 'English work' — emerged as the most internationally prestigious embroidery product of the high medieval period. The term appears in papal inventories, French royal records, and ecclesiastical accounts across 13th and 14th-century Europe, typically in the context of luxury ecclesiastical commissions of extraordinary cost. The defining technical innovation of Opus Anglicanum was underside couching: rather than taking the couching thread over the top of the laid gold and stitching it to the fabric on both sides (the standard surface couching), underside couching loops the couching thread around the gold thread from below — the gold is pulled through a tiny loop of the couching thread to the fabric underside, making the couching mechanism entirely invisible from the front. The gold surface reads as an uninterrupted metallic plane with the couching structure below it, not visible as an overlay. This produces an exceptionally flat, flexible surface and — critically — a gold that catches light at different angles as the vestment moves during liturgical ceremony, the slight variations in how the gold thread settles around each underside couching loop creating a dynamically shifting metallic surface. The V&A holds the two primary Opus Anglicanum study examples: the Syon Cope (ca. 1300–1320) and the Butler-Bowdon Cope (ca. 1330–1350).
Or Nué's development in Flemish and Burgundian court embroidery ateliers in the 15th century represents the confluence of Italian Renaissance pictorial ambition with the established goldwork technical tradition of Northern Europe. The commission of embroidered vestments for the Order of the Golden Fleece — founded by Philip the Good, Duke of Burgundy, in 1430 — produced the historical Or Nué examples in the Kunsthistorisches Museum in Vienna that remain the primary technical reference: complete figural scenes in silk-and-gold shading at a level of pictorial fineness that approaches painting in its tonal range and detail. The Royal School of Needlework (RSN), founded in 1872 under Queen Victoria's patronage and continuing today at Hampton Court Palace, represents the most institutionally continuous transmission of British goldwork tradition, offering the formal goldwork and silk shading courses that establish the technical standard for contemporary professional goldwork instruction.
Tier structures for goldwork embroidery Patreon creators
Goldwork embroidery instruction maps naturally onto a tiered Patreon structure because the technique has a genuine and extended skill ladder: a beginner learning Jap gold couching has at least twelve months of foundational work before attempting Or Nué; an Or Nué practitioner has several more years of refinement before their color mapping and couching density judgment reliably matches the pictorial reference. This extended skill progression means patrons remain subscribed for longer than in craft categories with a shorter learning curve, making goldwork Patreon a structurally high-retention category.
Gilt tier ($15/month): monthly PDF technique note (3,000–5,000 words) covering one specific goldwork skill at the procedural level that practice alone does not supply — the correct mellor grip for nudging Jap gold without skin contact, the cutting angle for rough purl vs check purl on a scale diagram, the felt padding layer calculation formula for a target dome height. Materials sourcing list for the month's technique: specific Jap gold product names (Benton and Johnson K1 and K2 grades), purl wire sizes from UK suppliers (Creative Miriam, Barnyarns), yellow silk couching thread specifications. Design template for practice: one small design element (leaf, trefoil, simple floral) drawn at actual size with technique annotations. This tier serves the audience who wants to study and plan even when they cannot yet source or afford the materials — they are building the knowledge base that will inform their first actual project.
Passing Thread tier ($35/month): all Gilt tier content plus: a 20–35 minute technique video demonstrating the month's skill in real time with close-up camera on the working surface, narrated throughout. The video shows the material handling that text cannot transfer — how to hold the purl spool while cutting, the exact pressure on the mellor to position a chip piece, the couching stitch tension that seats the gold thread without dragging it sideways. Pattern template with increasing complexity as the subscription progresses: a design that builds each month, adding new technique elements as they are covered in sequence. This tier serves active embroiderers who have sourcing access to goldwork materials and are working alongside the instruction — they are building a project progressively over several months and the monthly pattern update is the structural progression engine of their subscription.
Or Nué tier ($75/month): all above plus: a quarterly deep-dive session (90–120 minutes video) covering a complex multi-technique project element — an Or Nué section with color mapping documentation, a padded raised element with the full three-stage padding construction sequence, a purl-and-gold combination piece with design, transfer, framing, and execution documented from start to finish. The documentation includes the design planning stage (cartoon preparation, value mapping diagram, couching density map for Or Nué) that is typically omitted from tutorial content because it happens before the camera is switched on. One personal design consultation per quarter: the patron submits their current project photograph with a specific question about their technique execution, and the creator responds with a specific diagnostic (what the gold surface reveals about couching tension, what the felt dome profile indicates about layer sizing, what the purl chip alignment shows about cut quality). This personal feedback loop is the primary value-add at the $75 tier — it shortens the learning curve for errors that unguided practice would reinforce rather than correct.
Opus tier ($150/month): all above plus: monthly live or recorded 45-minute session working through the patron's current project — the patron shares their working frame on camera, the creator observes and responds in real time to technique questions as they arise during a live working session. Priority access to pattern archive. Annual design commission: one project design (design element selection, cartoon at full scale, technique sequence plan, materials specification list) prepared specifically for the patron's stated skill level and equipment access. This tier serves goldwork practitioners working toward professional qualification (RSN Certificate in Technical Hand Embroidery, Guild of Needlelaces and Goldwork membership) who need instruction that goes beyond what formal course syllabi cover. The $150 price point is substantially below the cost of a single RSN goldwork workshop day, making the Patreon subscription economically rational for the professional-development audience.
Apple Tax: what goldwork embroidery Patreon creators lose on iOS subscriptions from November 2026
Apple's 30% iOS in-app purchase fee on Patreon subscriptions takes effect November 1, 2026. Goldwork embroidery Patreon creators sit in one of the highest iOS-concentration craft instruction categories: the audience for historical textile technique, couture-adjacent embroidery, and visual-premium craft content is consistently among the most iOS-heavy demographics on every platform. Platform iOS distribution for this audience: Instagram goldwork and embroidery photography accounts 72–85% iOS (the fashion-adjacent, aesthetics-driven Instagram embroidery audience uses iPhone at very high rates; goldwork's jewel-like visual quality drives premium audience clustering); Pinterest goldwork and ecclesiastical textile boards 67–80% iOS; YouTube goldwork and RSN technique tutorials 55–68% iOS.
Revenue impact at three Patreon subscriber tiers from November 2026: at $200/month total revenue, 76% iOS — $200 × 0.76 × 0.30 = $45.60/month ($547.20/year); at $350/month, 78% iOS — $350 × 0.78 × 0.30 = $81.90/month ($982.80/year); at $500/month, 80% iOS — $500 × 0.80 × 0.30 = $120/month ($1,440/year). A goldwork creator with 18 patrons averaging $220/month and 78% iOS concentration loses 18 × $220 × 0.78 × 0.30 = $927.36/month to the Apple Tax — $11,128.32/year, the equivalent annual revenue of more than 4 full $220/month patrons redirected to Apple's balance sheet. Goldwork instruction is expensive to create — the teacher's time, the materials consumed in demonstration work, the specialized equipment — and commands higher subscription prices than most craft Patreon categories. This means the Apple Tax dollar amount per creator is proportionally larger than in lower-priced craft niches, even if the percentage rate is the same 30%.
KeepTier routes all subscriptions through Stripe web checkout, operating entirely outside Apple's iOS IAP system. When a patron subscribes via a KeepTier creator page link — from a YouTube description, Instagram bio link, or email — payment processes on the web at the full subscription value with no Apple deduction. For a goldwork creator at $350/month with 78% iOS exposure, moving new patron subscriptions to KeepTier preserves $81.90/month per iOS patron-month — $982.80 per patron annually — that would otherwise be permanently transferred to Apple. See keeptier.com for the full calculation at your own revenue and iOS percentage.
What goldwork Patreon content retains subscribers longest
Goldwork Patreon retention correlates most strongly with content that documents the procedural decisions that are genuinely difficult to derive from looking at finished work or watching a distant video shot. The decisions that retain goldwork patrons: purl cut length calculation — for a given design area shape and thread angle, what purl chip length produces level, gap-free fill coverage (the formula: effective chip length = perpendicular width of the design element at the cut position, measured against the couching thread direction, not the design edge direction; this measurement changes continuously as the filled area curves). Felt layer sizing calculation — for a target dome height of N mm, how many felt layers and what border offset at each layer (the general formula: subtract 2–3mm at each layer; a 6mm dome requires three layers, sizes 100%, 70%, and 40% of the full design shape). Couching interval on curves — the relationship between the radius of curvature of a gold thread pair and the maximum interval before buckling occurs (a rule of thumb that must be verified by material test: on a 10mm radius curve, maximum interval is approximately 2mm; on a 5mm radius curve, approximately 1.5mm; below 3mm radius, the gold pair usually requires a guide stitch at the apex before couching begins). Or Nué color mapping — the specific process of translating a digital photograph of a reference image into a grayscale value map, then assigning couching intervals and thread colors to each value zone, then testing on a sample before committing to the full working frame. This planning documentation is completely absent from published goldwork instruction and represents the highest-value unique content in the Patreon goldwork category.