What blade TPI and tooth geometry variables must scroll saw creators document for reproducible results?

Scroll saw blade selection is the most technically consequential variable in scroll saw work and the one most often documented inadequately in tutorials. Blade type determines cut surface quality, kerf width, curve radius capability, and tear-out behavior on the back face of the workpiece, and these properties interact differently depending on wood species and thickness. The primary blade types are: skip tooth — every other tooth is removed, producing a wide gullet (the space between teeth) that evacuates sawdust efficiently; suited for softer woods and faster cuts where surface finish quality is secondary; produces a slightly rougher cut face than fine-tooth blades. Double skip tooth — two consecutive teeth removed between each cutting tooth, producing the widest gullet and the most aggressive chip clearance; suited for thick softwood and production cutting. Reverse tooth — the bottom five to seven teeth of the blade are reversed so they cut on the upward stroke; the majority of teeth cut on the downward stroke as normal, but the reversed teeth on the upstroke cut through the back face of the workpiece on the return stroke, reducing the tear-out and fiber lifting that standard downward-only cutting blades produce on the bottom surface of the workpiece. Reverse tooth is the standard selection for portrait and fretwork in thin plywood where back-face quality matters. Crown tooth — symmetrical double-point teeth that cut on both forward and backward strokes; suited for work requiring consistent bidirectional cutting and for awkward-grain woods. Spiral blade — the teeth are twisted helically around the blade body, allowing cutting in any direction without repositioning the workpiece; suited for compound curves and 3D stack cutting, but produces a wider kerf and rougher surface than flat blades. TPI ranges: 7–12 TPI produces an aggressive cut with wide kerf for thick softwood and fast rough cuts; 13–20 TPI is general purpose for 3/4” hardwood; 20–30 TPI is for fine detail work, 1/16”–1/8” veneers, and tight-radius portrait piercing. Blade tension must be documented and verified: properly tensioned blade emits a musical pitch when plucked (lightly pluck with fingernail and listen for a clear note; the specific pitch is less important than the presence of a clear tone versus a dull thud indicating under-tension). Under-tensioned blades wander in curves and produce inaccurate cuts; over-tensioned blades fatigue and snap prematurely.

What wood species and grain variables are critical for scroll saw fretwork and intarsia documentation?

Wood species selection directly affects cut quality, surface finish after sanding, color and grain pattern in the finished piece, and dimensional stability after the project is assembled and finished. Documentation must go beyond species name to include the variables that actually determine behavior in the scroll saw. Baltic birch plywood is the standard substrate for fretwork and portrait piercing: it is manufactured from thin birch veneers in a void-free cross-ply construction that provides consistent density throughout the panel, no internal voids that would cause blade deflection or surface collapse, and predictable cutting behavior at any angle relative to the surface grain. 3-ply 1/4” Baltic birch is the most common thickness for portrait work. Document ply count, panel thickness, and source if using birch plywood. For solid wood species, the Janka hardness rating quantifies the force required to embed a steel ball to half its diameter into the wood face — it is a proxy for resistance to cutting and for blade wear. Cherry (Janka 950 lbf) has fine grain with a slight tendency to fuzz at cut edges, sands cleanly, and burns if feed rate is too slow for the blade’s heat dissipation capacity. Maple (Janka 1450 lbf) is hard, resists tear-out, and requires a sharp blade and careful feed rate to prevent heat buildup and blade deflection in tight curves. Walnut (Janka 1010 lbf) has an open grain with visible medullary rays; the open pores require grain filler before applying a final finish. Oak (Janka 1290 lbf) has very prominent ray cells in quarter-sawn cuts, producing a visible blonde-to-dark color contrast valued in intarsia work. Beyond species, document: cut type (flat-sawn produces cathedral grain pattern; quarter-sawn exposes ray cells on the face for maximum figure; rift-sawn minimizes figure for clean intarsia backgrounds), grain direction relative to the cut path for each intarsia piece (cutting against the grain in a tight curve risks grain runout and breakage in thin sections), and wood moisture content (ideally 6–8% for pieces intended for indoor display; above 12% risks significant movement and joint opening after the glue-up is complete and the piece acclimates to indoor humidity).

How does stack cutting work and what are the documentation variables that affect accuracy and piece consistency?

Stack cutting is the technique of cutting multiple identical pieces simultaneously by stacking several sheets of stock and cutting through the entire stack in a single pass. It is the primary efficiency technique for production scroll saw work and for creating sets of matching pieces for layered 3D and segmentation projects. Three adhesion methods are in common use for holding stacks together during cutting. Tape stack uses double-sided tape between layers: layers are pressed together with the tape holding them in alignment; after cutting, the layers are separated by sliding a palette knife or similar tool between them to break the tape bond. Tape stack is the fastest method for soft materials and low-tolerance work but can allow slight layer shift during aggressive cuts. Pin stack uses pilot holes drilled at the corners of the stack before cutting; registration pins (small nails or brass rod sections) inserted through all layers keep the stack precisely aligned through the entire cut. Pin stack is preferred for tight-tolerance fretwork where piece-to-piece dimensional accuracy matters. Brad nail stack uses small brad nails driven through waste areas of the pattern, nailed through all layers into a sacrificial backer board; the nails are removed after cutting and the nail holes fall in waste wood. Brad nail stack is suited for large stacks in thick material. Maximum stack height is limited by blade working length, wood hardness, and kerf width: for standard skip-tooth blades in 1/4” Baltic birch plywood, four to six layers is the practical maximum before blade deflection in curves accumulates enough error to make lower layers inaccurate. Document: number of layers, species and thickness per layer, adhesion method, blade type and TPI used for the stack thickness, and whether blade perpendicularity to the table was verified before stacking. A blade that is even one degree from perpendicular produces an error that multiplies with each additional layer: a 1° tilt in a six-layer 1/4” stack produces 3mm of dimensional difference between the top and bottom layer at the cut edge.

How does the Apple Tax affect scroll saw creator Patreons in 2026?

Scroll saw creators build audience through YouTube tutorial videos (fretwork technique, intarsia assembly, portrait piercing step-by-step), Instagram finished-piece photography showcasing the detail and wood grain of completed intarsia and fretwork, and TikTok process content featuring the scroll saw cutting and reveal of finished pieces. The woodworking and craft content audience is heavily mobile. YouTube scroll saw tutorials: 55–68% iOS. Instagram scroll saw finished-piece photography: 62–75% iOS — the grain patterns and dimensional relief of intarsia work photographs well in mobile-first square formats. TikTok scroll saw process content: 65–78% iOS. Beginning November 1, 2026, Apple charges Patreon 30% on every iOS subscription payment. In dollar terms: at $200/month with 62% iOS, approximately $37.20/month ( $446.40/year ). At $350/month with 66% iOS, approximately $69.30/month ( $831.60/year ). At $500/month with 70% iOS, approximately $105/month ( $1,260/year ). Enable Patreon’s web-only billing toggle in Creator Settings before October 31, 2026. Update YouTube description links, Instagram bio, and TikTok profile links to the Patreon web URL. Verify the subscription flow from an iPhone browser before November 1.

Explainers · 2026-07-04 · ~1,900 words

Patreon for scroll saw creators: blade tooth geometry and TPI selection, wood grain and veneer documentation, stack cutting technique, intarsia vs segmentation work, iOS rates, and the Apple Tax in 2026

Scroll saw creators on Patreon retain subscribers with process documentation that finished-piece photography cannot carry: blade tooth geometry and TPI matched to wood species and cut type, wood species Janka hardness and grain direction relative to the cut path, stack cutting adhesion and registration methods that determine whether lower-layer pieces match upper-layer accuracy, and the intarsia species combination and contour sanding sequence that creates dimensional relief without paint or stain. The scroll saw audience spans YouTube tutorials, Instagram woodworking photography, and TikTok process content, with iOS rates consistent with the woodworking and craft category.

Creator types and tier structure

Fretwork and portrait scroll saw artists

Free-standing fretwork, shadow box fretwork, and portrait piercing work. Tier structure: Pattern Notes ($12–18/month, blade brand and TPI, wood species and thickness, saw speed setting, blade tension documentation, blade-to-wood feed pressure, pattern transfer method, and sanding sequence after cutting) and Workshop ($40–55/month capped 8 patrons, monthly session with patron fretwork troubleshooting and feedback on blade wander, tear-out, and cut-line deviation issues).

Pattern Notes must specify blade brand alongside TPI because blades of the same TPI from different manufacturers vary significantly in tooth geometry, kerf width, and blade body thickness. Two 15-TPI blades — one skip-tooth and one reverse-tooth — produce different back-face results on the same portrait plywood. “15-TPI blade” without tooth type and brand is not reproducible documentation.

Intarsia creators

Multi-species wood puzzle assembly with contour sanding for dimensional relief. Tier structure: Process Notes ($15–22/month, species combination rationale with color and grain objectives, grain direction for each piece, wood thickness per section, blade selection for tight-radius curves, contouring grits and tools per piece, assembly adhesive type and clamping documentation) and Intensive ($45–65/month capped 6 patrons, monthly session reviewing patron intarsia species selection and fit-up issues).

Intarsia Process Notes must document grain direction for every piece in the composition because grain direction determines the color and figure change across the piece as it is contour-sanded: sanding with the grain preserves figure; sanding against or across the grain dulls it. Document grain direction as a clock-face angle relative to the top of the pattern for each piece, and note the planned contour sanding direction for each.

Segmentation and 3D scroll saw artists

Layered and stacked 3D animals, landscapes, and architectural subjects. Tier structure: Layer Notes ($15–20/month, species by layer, thickness by layer, blade selection per layer thickness, registration pin or system documentation, glue type, clamping pressure and duration) and Project ($45–60/month, full project walkthrough from pattern design through stack cutting, layer glue-up, and final finish documentation).

Blade TPI, kerf, and tooth geometry documentation

Blade selection is the most technically consequential decision in scroll saw work. Tooth geometry determines cut surface quality, back-face tear-out, chip clearance, and curve radius capability. TPI determines kerf width and cut surface coarseness. Both interact with wood species hardness and thickness, and both must be documented together with those variables to be reproducible.

Tooth geometry types: skip tooth removes every other tooth, leaving a wide gullet that evacuates sawdust chips efficiently and reduces heat buildup in softwoods and thick stock — suited for general cutting in pine, basswood, and soft maple at faster feed rates where a slightly rougher cut is acceptable. Double skip tooth removes two consecutive teeth between each cutting tooth, producing the widest chip clearance of flat blade types; used for the fastest aggressive cuts in thick softwood. Reverse tooth places the bottom five to seven teeth of the blade in the upward-cutting orientation; the majority of teeth cut on the down stroke as normal, while the reversed teeth cut on the upstroke through the back face of the workpiece, greatly reducing the tear-out and fiber lifting that standard blades produce on the bottom surface. Reverse tooth is the preferred choice for portrait and fretwork in thin Baltic birch plywood where the back face will be visible in the finished piece. Crown tooth uses symmetrical double-point teeth that cut on both strokes; suited for bidirectional work and difficult cross-grain cuts. Spiral blade twists the teeth helically around the blade body, allowing cutting in any direction without rotating the workpiece; it produces a wider kerf and rougher surface finish than flat blades, and is used for compound curves and 3D stack work where cut-edge direction changes are rapid.

TPI ranges by application: 7–12 TPI for aggressive cuts in thick softwood and rough blanks; 13–20 TPI for general-purpose cutting in 3/4” hardwood with acceptable surface finish; 20–30 TPI for fine detail work, thin veneer (1/16”–1/8”), and tight-radius portrait piercing. Blade tension is critical and must be verified before each session: a properly tensioned blade emits a clear musical pitch when the blade body is plucked lightly with a fingernail. An under-tensioned blade produces a dull thud, wanders in curves, and cannot hold a line in detail work. An over-tensioned blade fatigues the metal at the pin holes or blade clamps and snaps prematurely — typically within the first few minutes of cutting.

Wood species and grain documentation for scroll saw work

Wood species selection and documentation affects every aspect of the scroll saw result: cut surface quality immediately after the blade, surface behavior during sanding, color and figure in the final piece, and dimensional stability after assembly. Janka hardness (the force in pound-feet required to embed a 0.444” steel ball to half its diameter in the wood face) provides a consistent reference for comparing species cutting resistance. Document species by name and Janka rating for each piece or layer in the project.

Baltic birch plywood (Janka rating not applicable as plywood): void-free cross-ply construction from thin birch veneers; no internal voids that cause blade deflection or surface collapse; consistent density throughout; ideal for fretwork, portrait work, and stack cutting. Document ply count and panel thickness. Cherry (Janka 950 lbf): fine, straight grain with minimal figure variation; slight tendency to fuzz at cut edges if the blade is dull or feed rate is too slow; sands cleanly and responds well to finishing. Maple (Janka 1450 lbf): hard, dense, resists tear-out; requires a sharp blade and a steady, deliberate feed rate to prevent heat buildup in tight curves that causes blade discoloration and deflection. Walnut (Janka 1010 lbf): open-grain structure with prominent medullary rays in quarter-sawn cuts; open pores require grain filler before oil or film finish to prevent finish absorption variation. Oak (Janka 1290 lbf): very prominent ray cells in quarter-sawn lumber produce a visible blonde-to-dark color contrast that is valued in intarsia for creating natural gradations.

Document for each piece: species name, Janka hardness, cut type (flat-sawn vs quarter-sawn — quarter-sawn exposes ray cells on the face for maximum figure and adds visual interest in intarsia compositions), grain direction relative to the scroll saw cut path (grain parallel to long cuts is stable; grain perpendicular to narrow bridges creates breakage risk in fine fretwork), and moisture content measured by pin-type moisture meter. Target moisture content for indoor-display pieces: 6–8%. Stock above 12% will contract significantly as it acclimates to indoor humidity (typically 35–55% RH), causing joints to open and intarsia pieces to shift after assembly.

Intarsia vs segmentation: documentation differences

Intarsia and segmentation are both multi-piece scroll saw composition techniques but require different documentation because their objectives and construction methods differ fundamentally. Intarsia uses different wood species — specifically selected for their natural wood tone, grain figure, and color contrast — to form a pictorial composition from the natural wood itself. No paint or stain is applied to the wood faces. The three-dimensional topographic relief effect that distinguishes intarsia from flat-puzzle work is created by contouring: each piece is individually shaped with a drum sander, rotary tool, or hand tools to produce a raised or recessed surface relative to adjacent pieces and the backer board. The contoured relief creates shadow lines at piece boundaries and produces a sculptural depth in the finished work that flat pieces cannot achieve.

Intarsia documentation requirements: for every piece in the composition, document species, Janka hardness, grain direction, planned surface level relative to the backer board (raised by X mm, flush, or recessed), contouring tool (drum sander grit, rotary burr type, or hand plane/chisel), sandpaper grit sequence for contouring, final sanding grit for the finished face, backer board species and thickness, adhesive type (yellow woodworking glue, hide glue, or two-part epoxy for dissimilar species combinations), and finish type and application method.

Segmentation uses multiple pieces that are typically flat and uniform in height; the pictorial effect is created through color contrast produced by staining, dyeing, or burning individual pieces before assembly, or by using woods of different natural tones in a flat arrangement. Segmentation documentation requirements: species by zone in the composition, stain or dye type and application method per piece, assembly registration method, adhesive, and backer board. Because segmentation pieces are flat, the documentation focus is on color treatment accuracy and registration precision rather than contouring sequence.

Apple Tax for scroll saw creator audiences

Scroll saw creators build audience through YouTube tutorial videos showing fretwork technique and intarsia assembly, Instagram finished-piece photography showcasing grain patterns and dimensional relief, and TikTok scroll saw process content featuring cutting speed and reveal moments. The woodworking and craft content audience is concentrated on mobile. YouTube scroll saw tutorials: 55–68% iOS. Instagram scroll saw finished-piece photography: 62–75% iOS — the wood grain texture and dimensional relief of intarsia photographs well in mobile-first formats. TikTok scroll saw cutting and reveal content: 65–78% iOS.

Beginning November 1, 2026, Apple charges Patreon 30% on every iOS subscription payment. In dollar terms: at $200/month with 62% iOS, approximately $37.20/month ($446.40/year). At $350/month with 66% iOS, approximately $69.30/month ($831.60/year). At $500/month with 70% iOS, approximately $105/month ($1,260/year). Enable Patreon’s web-only billing toggle in Creator Settings before October 31, 2026. Update YouTube description links, Instagram bio, and TikTok profile links to the Patreon web URL. Verify the subscription flow from an iPhone browser before November 1.

KeepTier is a self-hosted membership page for creators who want 100% of their tier revenue and zero Apple tax. Plans start at $9/month.