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Decision fieldOpen accessASDP Sewing Professional DirectoryUnited States · North AmericaRemoveOpen accessControlled Tech Pack OrientationGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove
Decision fit
Primary jobSource productionSource productionFind patterns & fitFind patterns & fit
AreaProductionProductionPatterns & fitPatterns & fit
Best forFinding a US sewing or patternmaking professionalUnderstanding what a tech pack must control before using a template or releasing workSearching current and out-of-print sewing patternsAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence
Know before usingThis is a member referral directory, not a Stitch Authority roster or approval. ASDP states that it makes no representations, warranties, or guarantees and assumes no responsibility for members' products or services. Membership, a code of ethics, a profile, or referral availability does not establish credentials, experience, capacity, insurance, price, accessibility, workmanship, schedule, or project fit. Check those points, references, scope, samples, terms, and remedies directly.An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority.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 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.
Practical access
ForBothApparel brandsMakersApparel brands
Location or jurisdictionUnited States · North AmericaGlobalGlobalGlobal
AccessOpen accessOpen accessFree accountOpen access
FormatDirectoryStitch AuthorityCommunityStitch Authority
Source typeIndustry organizationStitch AuthorityCommunity databaseStitch Authority
Source and review
What the source establishesASDP's public directory searches members currently accepting referrals by location and professional specialty, including patternmakers, production sewers, designers, teachers, tailors, alteration specialists, and fabric or materials suppliers. A result opens a member profile and a contact action, and the page identifies the population as association members in good standing.The guide cites current ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it explicitly separates those authorities from product-specific technical and market decisions.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 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.
Linked page reviewedJul 21, 2026Jul 16, 2026Jul 21, 2026Jul 16, 2026
Next review dueJan 17, 2027Jul 16, 2027Jan 17, 2027Jul 16, 2027
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