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Decision fieldOpen accessApparel Measurement Tolerance Setting RecordGlobalRemoveOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemove
Decision fit
Primary jobSource productionFind patterns & fitFind patterns & fit
AreaProductionPatterns & fitPatterns & fit
Best forTurning an inherited or proposed garment tolerance into a controlled POM method, capability study, decision boundary, inspection rule, and change recordAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceSearching current and out-of-print sewing patterns
Know before usingThe record does not supply universal POM values, validate fit across a population, prove process capability, choose a statistical study or sampling plan, reproduce licensed standards, or replace qualified technical, fit, quality, statistical, safety, compliance, and legal review.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.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
ForApparel brandsApparel brandsMakers
Location or jurisdictionGlobalGlobalGlobal
AccessOpen accessOpen accessFree account
FormatStitch AuthorityStitch AuthorityCommunity
Source typeStitch AuthorityStitch AuthorityCommunity database
Source and review
What the source establishesThe guide cites current ISO, AATCC, and NIST sources for body and garment measurement boundaries, textile conditioning, dimensional-change testing, repeatability and reproducibility, and AQL-indexed sampling, while requiring the live product owner to set rather than inherit numerical tolerances.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.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 reviewedJul 15, 2026Jul 16, 2026Jul 21, 2026
Next review dueJul 15, 2027Jul 16, 2027Jan 17, 2027
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