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Decision fieldFree accountWoolmark Learning CentreGlobalRemoveFree downloadSeamly2DGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessHook & Needle Diameter ReferenceGlobalRemove
Decision fit
Primary jobLearn techniquesFind patterns & fitFind patterns & fitLearn techniques
AreaTechniques & repairPatterns & fitPatterns & fitYarn
Best forStructured wool educationDigital pattern draftingSearching current and out-of-print sewing patternsChecking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge
Know before usingThis 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.Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels.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 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.
Practical access
ForBothBothMakersMakers
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessFree accountFree downloadFree accountOpen access
FormatReferenceSoftwareCommunityStitch Authority
Source typeIndustry organizationOpen-source projectCommunity databaseStitch Authority
Source and review
What the source establishesThe 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.The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum.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 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.
Linked page reviewedJul 21, 2026Jul 21, 2026Jul 21, 2026Jul 16, 2026
Next review dueJan 17, 2027Jan 17, 2027Jan 17, 2027Jul 16, 2027
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