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| Decision field | Open accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove | Open accessQuiltMapGlobalRemove | Free downloadSeamly2DGlobalRemove | Open accessSeam Allowance ConverterGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Choose materials | Find patterns & fit | Find patterns & fit |
| Area | Patterns & fit | Materials | Patterns & fit | Patterns & fit |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Finding quilt-material sellers and adjacent quilting services by country or map | Digital pattern drafting | Working between pattern systems |
| Know before using | The record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review. | Coverage is quilting-specific and uneven by country; businesses can pay for enhanced features, and community or owner updates do not verify inventory, service quality, hours, or availability. | Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels. | A unit reference; the correct allowance depends on material, seam type, and production method. |
| Practical access | ||||
| For | Apparel brands | Makers | Both | Both |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Free download | Open access |
| Format | Stitch Authority | Directory | Software | Stitch Authority |
| Source type | Stitch Authority | First-party platform | Open-source project | Stitch Authority |
| Source and review | ||||
| What the source establishes | The guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments. | QuiltMap describes free public search and free basic listings, community submissions and claims, and country routes covering North America, Europe, Japan, South Korea, and Australia. | The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum. | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. |
| Linked page reviewed | Jul 16, 2026 | Jul 15, 2026 | Jul 21, 2026 | Jul 15, 2026 |
| Next review due | Jul 16, 2027 | Jan 11, 2027 | Jan 17, 2027 | Jul 15, 2027 |
| Inspect | ||||
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