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| Decision field | Open accessControlled Tech Pack OrientationGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Open accessPEFC Find CertifiedGlobalRemove | Open accessHook & Needle Diameter ReferenceGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Find patterns & fit | Check standards | Learn techniques |
| Area | Production | Patterns & fit | Standards | Yarn |
| Best for | Understanding what a tech pack must control before using a template or releasing work | Searching current and out-of-print sewing patterns | Finding or checking paper-based packaging and hangtag suppliers with PEFC chain-of-custody scope | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge |
| Know before using | An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority. | 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. | A chain-of-custody record applies only to the named organization and scope; verify the exact product claim, current status, supplier role, artwork approval, and transaction documentation for each order. | 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. |
| Practical access | ||||
| For | Apparel brands | Makers | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Free account | Open access | Open access |
| Format | Stitch Authority | Community | Directory | Stitch Authority |
| Source type | Stitch Authority | Community database | Official registry | Stitch Authority |
| Source and review | ||||
| What the source establishes | The guide cites current ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it explicitly separates those authorities from product-specific technical and market decisions. | 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. | PEFC describes the database as a current discovery and verification route for certified organizations, certificate validity, countries, product scope, sourcing, and due diligence. | 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. |
| Linked page reviewed | Jul 16, 2026 | Jul 21, 2026 | Jul 15, 2026 | Jul 16, 2026 |
| Next review due | Jul 16, 2027 | Jan 17, 2027 | Oct 13, 2026 | Jul 16, 2027 |
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