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| Decision field | Open accessKnitting Stitch LibraryGlobalRemove | PaidPatternLab LondonGlobalRemove | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Find patterns & fit | Find patterns & fit |
| Area | Techniques & repair | Patterns & fit | Patterns & fit |
| Best for | Learning or comparing knit structures | Generating an editable custom-measurement block | Searching current and out-of-print sewing patterns |
| Know before using | A foundational library, not yet an exhaustive stitch encyclopedia. | A measurement-generated draft is a starting block, not independent evidence of body capture, comfort, mobility, balance, garment ease, or production fit. The result depends on measurement accuracy, supported ranges, formula assumptions, selected options, and output handling. Review the service's privacy terms before storing body data and sew a representative toile before design, grading, or production use. | 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 | Makers | Both | Makers |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Paid | Free account |
| Format | Stitch Authority | Software | Community |
| Source type | Stitch Authority | First-party platform | Community database |
| Source and review | |||
| What the source establishes | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | PatternLab London's current drafting page says a user creates a measurement profile, selects a basic block or sloper, adjusts fit, dart placement, length, seam allowance, and sleeve options, then downloads the generated result as tiled PDF, AI, or SVG. The live catalogue names bodice, dress, trouser, and stretch blocks and displays a price before purchase. | 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 15, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 15, 2027 | Jan 17, 2027 | Jan 17, 2027 |
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