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| Decision field | Free accountThreadloop Sewing Pattern DatabaseGlobalRemove | Open accessFabric Mass Unit ConverterGlobalRemove | Free + paidYarnpondGlobalRemove | Open accessPattern Test Brief TemplateGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Choose materials | Find patterns & fit | Find patterns & fit |
| Area | Patterns & fit | Materials | Patterns & fit | Patterns & fit |
| Best for | Searching current and out-of-print sewing patterns | Translating the same fabric mass-per-area result between metric and U.S. customary listings | Running knit or crochet pattern tests | Planning a sewing, knitting, or crochet pattern test |
| 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. | The result is a numerical unit conversion, not a new measurement or conformance decision; it does not establish sample or lot representativeness, significant digits, drape, warmth, opacity, thickness, stretch, strength, shrinkage, durability, sewability, end use, target, or tolerance. | The platform is for knit and crochet rather than sewing, and a profile, application, rating, or platform listing does not prove technical competence, availability, identity, or fit for a project. Prices and plan limits can change. Define the test or edit scope, sizes, yarn, deadlines, compensation, confidentiality, intellectual property, file handling, expected feedback, and dispute process in writing before work starts. | The workflow is not a contract or quality certification; local legal duties and technical review may still apply. |
| Practical access | ||||
| For | Makers | Both | Both | Both |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Free account | Open access | Free + paid | Open access |
| Format | Community | Stitch Authority | Community | Stitch Authority |
| Source type | Community database | Stitch Authority | First-party platform | Stitch Authority |
| 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. | The calculator uses the NIST SP 811 Appendix B.8 conversion from avoirdupois ounces per square yard to kilograms per square metre and links to a source-reviewed fabric mass record for method, sampling, conditioning, and product controls. | Yarnpond's current pages let knit and crochet designers publish public or private testing calls, select applicants, communicate with test teams, set milestones, collect feedback, post sample-making calls, and advertise tech-editing jobs. Testers can participate without charge, while designers pay per testing or job post or use a subscription, and tech editors maintain profiles and apply to posted work. | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. |
| Linked page reviewed | Jul 21, 2026 | Jul 16, 2026 | Jul 21, 2026 | Jul 15, 2026 |
| Next review due | Jan 17, 2027 | Jul 16, 2027 | Jan 17, 2027 | Jul 15, 2027 |
| Inspect | ||||
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