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| Decision field | Open accessConstruction Classification & Callout Verification RecordGlobalRemove | Open accessAIC Find a ProfessionalUnited States · North AmericaRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Source production | Repair & conserve | Find patterns & fit |
| Area | Production | Techniques & repair | Patterns & fit |
| Best for | Using construction codes without treating classification as a machine setting, material assignment, supplier translation, or performance guarantee | Finding professional textile or costume conservation help in the United States | Searching current and out-of-print sewing patterns |
| Know before using | 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. | The directory is opt-in and excludes qualified people who do not list; designation does not guarantee availability, price, or suitability for a specific object or treatment. | Community members add and quality-control the records, so confirm sizing, measurements, fabric suggestions, format, availability, errata, license, and purchase terms with the designer or publisher. Adding an entry to a stash does not provide the pattern files. Saved searches and private PDF storage are paid Plus features, and a listing or review does not establish pattern accuracy or fit. |
| Practical access | |||
| For | Apparel brands | Both | Makers |
| Location or jurisdiction | Global | United States · North America | Global |
| Access | Open access | Open access | Free account |
| Format | Stitch Authority | Directory | Community |
| Source type | Stitch Authority | Industry organization | Community database |
| Source and review | |||
| What the source establishes | 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. | AIC says listed Professional Members complete a peer-reviewed application and may be searched by specialty, material, service, location, or name. | Threadloop's official guide describes an independent, fully crowdsourced database covering available and out-of-print sewing patterns. Its search supports pattern type, fabric type, age group, body type, cup size, level, format, file features, language, measurements, availability, and other filters; members can also track a stash, wishlist, projects, reviews, and discussions. |
| Linked page reviewed | Jul 16, 2026 | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jan 12, 2027 | Jan 17, 2027 |
| Inspect | |||
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