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| Decision field | Open accessConstruction Classification & Callout Verification RecordGlobalRemove | Open accessYarnSubGlobalRemove | Open accessCrochet Stitch LibraryGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Choose materials | Learn techniques | Find patterns & fit |
| Area | Production | Yarn | Techniques & repair | Patterns & fit |
| Best for | Using construction codes without treating classification as a machine setting, material assignment, supplier translation, or performance guarantee | Replacing a discontinued or unavailable yarn | Learning or identifying crochet stitches | 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. | 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. | A foundational library, not yet an exhaustive stitch encyclopedia. | 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 | Makers | Makers | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Open access | Free account |
| Format | Stitch Authority | Reference | Stitch Authority | Community |
| Source type | Stitch Authority | First-party platform | Stitch Authority | 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. | 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. | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | 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 21, 2026 | Jul 15, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jan 17, 2027 | Jul 15, 2027 | Jan 17, 2027 |
| Inspect | ||||
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