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| Decision field | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Free + paidPattern TestersGlobalRemove | Open accessTake a Yarn Adventure LYS DatabaseUnited States · North AmericaRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Yarn |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Coordinating an independent sewing-pattern test | Planning a local yarn shop visit or fibre-focused trip in the United States |
| 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. | The interface and plan description do not prove tester reach, completion, feedback quality, fit validity, export quality, uptime, support, or suitability for an established release process. Measurements and photos can be sensitive personal data. Run a non-critical pilot, review the current privacy and service terms, define consent and photo rights, test exports and deletion, and keep pattern approval and release responsibility with the designer. | The project accepts donations and visibly marks partner shops, while many non-partner records contain only a name and address; verify existence, hours, inventory, accessibility, and services before traveling. |
| Practical access | |||
| For | Apparel brands | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | United States · North America |
| Access | Open access | Free + paid | Open access |
| Format | Stitch Authority | Software | Directory |
| Source type | Stitch Authority | First-party platform | Community database |
| 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. | Pattern Testers currently offers application intake, tester selection, feedback, photos, approvals, issue tracking, revisions, a reusable tester directory, and release deadlines. The public pricing page shows a limited free plan and paid Pro and Business tiers. Its June 2026 privacy policy lists names, email addresses, measurements, photos, feedback, application history, and assignments among the data processed. | The public database groups shops from Alabama through Wyoming, includes mobile shops and a map, and offers a correction form; commercial Yarn Adventure partners are marked with a star. |
| Linked page reviewed | Jul 27, 2026 | Jul 21, 2026 | Jul 16, 2026 |
| Next review due | Jul 27, 2027 | Jan 17, 2027 | Jan 12, 2027 |
| Inspect | |||
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