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Decision fieldFree accountFOURSOURCE Supplier NetworkGlobalRemoveOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessPattern Test Brief TemplateGlobalRemove
Decision fit
Primary jobSource productionFind patterns & fitFind patterns & fitFind patterns & fit
AreaProductionPatterns & fitPatterns & fitPatterns & fit
Best forSearching global apparel and textile production capabilitiesAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceSearching current and out-of-print sewing patternsPlanning a sewing, knitting, or crochet pattern test
Know before usingThe company count is a changing platform claim. Search fields, profiles, certificates, locations, and account access do not independently verify the legal entity, factory ownership, capability, capacity, certificate validity or scope, compliance performance, delivery, or project fit. Confirm the site and subcontracting, credentials with issuers, samples, audits when appropriate, specifications, contracts, and commercial terms.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.The workflow is not a contract or quality certification; local legal duties and technical review may still apply.
Practical access
ForApparel brandsApparel brandsMakersBoth
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessFree accountOpen accessFree accountOpen access
FormatMarketplaceStitch AuthorityCommunityStitch Authority
Source typeCommercial marketplaceStitch AuthorityCommunity databaseStitch Authority
Source and review
What the source establishesFOURSOURCE's current public network page presents an operator-reported global company count and country or territory search. It says logged-in users can narrow results by compliance certificates, product groups, fabric types, target groups, minimum order quantities, and other fields, with a free-trial and supplier sign-up route.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.The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface.
Linked page reviewedJul 21, 2026Jul 16, 2026Jul 21, 2026Jul 15, 2026
Next review dueJan 17, 2027Jul 16, 2027Jan 17, 2027Jul 15, 2027
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