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Decision fieldFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveOpen accessHook & Needle Diameter ReferenceGlobalRemoveFree accountWoolmark Learning CentreGlobalRemove
Decision fit
Primary jobFind patterns & fitFind patterns & fitLearn techniquesLearn techniques
AreaPatterns & fitPatterns & fitYarnTechniques & repair
Best forSearching current and out-of-print sewing patternsAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceChecking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gaugeStructured wool education
Know before usingCommunity 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 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.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.This is Woolmark-operated education focused on wool, not a neutral comparison of all fibres or processing systems. A completion badge records coursework, not independent proof of production competence, product performance, environmental impact, or compliance. Confirm technical values and local requirements against current standards before production use.
Practical access
ForMakersApparel brandsMakersBoth
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessFree accountOpen accessOpen accessFree account
FormatCommunityStitch AuthorityStitch AuthorityReference
Source typeCommunity databaseStitch AuthorityStitch AuthorityIndustry organization
Source and review
What the source establishesThreadloop'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 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.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.The current Woolmark Learning Centre library publishes free account-based coursework with module counts, completion times, progress tracking, knowledge checks, and supporting resources. Its wool programs cover fibre science, raw-wool and yarn processing, dyeing and finishing, woven textiles, knitwear, product quality, and wastewater management for learners and facilitators.
Linked page reviewedJul 21, 2026Jul 16, 2026Jul 16, 2026Jul 21, 2026
Next review dueJan 17, 2027Jul 16, 2027Jul 16, 2027Jan 17, 2027
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