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| Decision field | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Free downloadAFIRM Restricted Substances ListGlobalRemove | Open accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove | Open accessKnittyGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Check standards | Find patterns & fit | Find patterns & fit |
| Area | Patterns & fit | Standards | Patterns & fit | Yarn |
| Best for | Searching current and out-of-print sewing patterns | Building a product chemical-restriction baseline | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Free editorial knitting patterns and techniques |
| Know before using | 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. | AFIRM states that its list is guidance, not legal advice, an industry standard of care, or a guarantee of completeness or brand acceptance. It does not replace current law, a customer's stricter RSL, manufacturing-input controls, a product-specific risk and sampling plan, accepted laboratory methods, supplier controls, or performance and safety testing. | 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. | Free access does not grant commercial reproduction or sale rights; uses beyond one personal copy must be resolved with the designer or author. Knitty says it tries to avoid errors but disclaims responsibility for pattern and technique inaccuracies. Check the live page for corrections, verify gauge and measurements, and confirm permission before any commercial use. |
| Practical access | ||||
| For | Makers | Apparel brands | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Free account | Free download | Open access | Open access |
| Format | Community | Reference | Stitch Authority | Reference |
| Source type | Community database | Industry organization | Stitch Authority | First-party platform |
| Source and review | ||||
| What the source establishes | 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. | AFIRM publishes a 2026 multilingual Restricted Substances List for chemicals in finished apparel, footwear, accessories, and related materials, with a material-specific testing matrix. Its FAQ says the list does not cover product-performance testing, distinguishes the finished-product RSL from manufacturing-input lists, and tells suppliers to check each customer's brand-specific requirements and testing acceptance. | 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. | Knitty currently publishes web-only editorial issues containing original knitting and crochet patterns and articles. Its legal page states that patterns are free for one person's personal use, identifies each designer or author as the copyright holder, and explains that verified pattern corrections are posted in bright pink on the pattern page. |
| Linked page reviewed | Jul 21, 2026 | Jul 21, 2026 | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Jan 17, 2027 | Oct 19, 2026 | Jul 16, 2027 | Jan 17, 2027 |
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