Generate custom quilt patterns: block size, pattern type (log cabin, half-square triangle, flying geese, hexagon), color palette. Auto-calculate fabric yardage per color + backing + batting + binding. Print-ready PDF pattern with cutting layout. Save projects. Dangercorn Crafts was built with this — now it's open source.
Log cabin, half-square triangle, flying geese, hexagon, disappearing 9-patch, drunkard's path, bargello. Per type: block size range (4"-20"), variations (on-point, alternating, pinwheel). Preview in browser.
Per color: yards needed (with 10% cutting waste). Backing yardage (with seaming logic). Batting yardage. Binding strips (double-fold, 2.25" standard). Bombproof math — no 'oh I'm 1/4 yard short' at the cutting table.
Full cutting layout: each fabric labeled with yardage + block count. Paper-pieced templates to print and tape. Printable assembly diagram. Actual-size or scaled. Quilters bring the PDF to the shop.
Save a pattern-in-progress. Iterate on colors without re-entering dimensions. Revision history. Per-project notes (fabric sources, recipient, deadline). Year-over-year project library.
Jess's Dangercorn Crafts uses this tool for every custom quilt. Pricing math, fabric sourcing, cutting day all driven by the tool. Battle-tested on real commissions.
FastAPI + SQLite. Your patterns, fabric lists, project history stay on your machine. Not on a quilting-SaaS that pushes fabric affiliate links.
Hosted plans are early-access. Self-host today; email tim@dangercorn.net to join the waitlist.
quilt-pattern-tool is one of 220+ verticals scaffolded from the same template. Each gets a working skeleton for free; individual ones get promoted to full products as demand surfaces.
Handmade-product cost calculator. AI suggests retail pricing.