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| Decision field | Open accessHook & Needle Diameter ReferenceGlobalRemove | Open accessYarnSubGlobalRemove | Free + paidPattern TestersGlobalRemove | Open accessConstruction Classification & Callout Verification RecordGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Choose materials | Find patterns & fit | Source production |
| Area | Yarn | Yarn | Patterns & fit | Production |
| Best for | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge | Replacing a discontinued or unavailable yarn | Coordinating an independent sewing-pattern test | Using construction codes without treating classification as a machine setting, material assignment, supplier translation, or performance guarantee |
| Know before using | The reference is not a dimensional measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, gauge result, or proof that a proposed tool will produce the required fabric. | A suggested match is a data-based shortlist, not proof that the yarn suits the pattern or maker. Yarn records can be incomplete or wrong, prices and availability vary by market, and the site uses affiliate links. Confirm the required gauge, total length, fibre behavior, construction, care, color, dye lot, accessibility, and seller terms, then make and assess a representative swatch before committing. | 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 record does not reproduce licensed code diagrams, verify a user's proposed code, authorize an ISO and ASTM crosswalk, select a construction, set stitch density or machine settings, prove supplier repeatability or performance, or replace the licensed standards and qualified construction, sewing, production, testing, safety, and quality review. |
| Practical access | ||||
| For | Makers | Makers | Apparel brands | Apparel brands |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Free + paid | Open access |
| Format | Stitch Authority | Reference | Software | Stitch Authority |
| Source type | Stitch Authority | First-party platform | First-party platform | Stitch Authority |
| Source and review | ||||
| What the source establishes | The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows and follows the Council's warning that company letter and number labels vary; blank aliases remain blank instead of being inferred. | YarnSub's official FAQ says its matching software compares gauge, texture, yarn weight and density, fibre content, and fibre qualities such as drape and softness. Discontinued yarns remain searchable as starting points but are excluded from suggested replacements, and each yarn page provides a route to report source-data problems. | 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 guide cites the current public scopes and statuses of ISO 4915:1991, ISO 4916:1991, and ASTM D6193-16(2025), plus current seam-failure and seam-tensile methods; it keeps classification, translation, complete process definition, physical verification, and performance evidence separate. |
| Linked page reviewed | Jul 16, 2026 | Jul 21, 2026 | Jul 21, 2026 | Jul 16, 2026 |
| Next review due | Jul 16, 2027 | Jan 17, 2027 | Jan 17, 2027 | Jul 16, 2027 |
| Inspect | ||||
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