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Decision fieldOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessSample Review & Approval RecordGlobalRemove
Decision fit
Primary jobFind patterns & fitFind patterns & fitSource production
AreaPatterns & fitPatterns & fitProduction
Best forAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceSearching current and out-of-print sewing patternsApproving a named sample without accidentally approving bulk
Know before usingThe 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.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 record does not validate every size or user, prove bulk conformity, prescribe universal defect classes or AQL, replace testing or inspection, or establish compliance.
Practical access
ForApparel brandsMakersApparel brands
Location or jurisdictionGlobalGlobalGlobal
AccessOpen accessFree accountOpen access
FormatStitch AuthorityCommunityStitch Authority
Source typeStitch AuthorityCommunity databaseStitch Authority
Source and review
What the source establishesThe 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.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 record applies version and lot controls from textile testing plus current ISO and ASQ acceptance-sampling boundaries to separate sample approval from bulk release.
Linked page reviewedJul 16, 2026Jul 21, 2026Jul 15, 2026
Next review dueJul 16, 2027Jan 17, 2027Jul 15, 2027
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