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Decision fieldOpen accessPattern Grading & Size-Run Validation RecordGlobalRemoveFree + paidThreadloop Sewing Pattern DatabaseGlobalRemoveFree + paidHandweaving.net Draft ArchiveGlobalRemoveFree downloadSeamly2DGlobalRemove
Decision fit
Primary jobFind patterns & fitFind patterns & fitLearn techniquesFind patterns & fit
Also useful forNo additional job recordedNo additional job recordedNo additional job recordedNo additional job recorded
AreaPatterns & fitPatterns & fitTechniques & repairPatterns & fit
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 patternsResearching loom-ready weaving structures and draftsDigital pattern drafting
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.A visible drawdown is not automatically a complete, corrected, rights-cleared, or loom-compatible project plan. Full draft data and advanced tools require a renewing subscription, and historical sources can contain errors or unclear provenance. Check shafts, treadles, tie-up, sett, yarn, floats, repeats, copyright status, and WIF compatibility before committing a warp.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.
Practical access
ForApparel brandsMakersMakersBoth
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessOpen accessFree + paidFree + paidFree download
FormatStitch AuthorityCommunityReferenceSoftware
Source typeStitch AuthorityCommunity databaseFirst-party platformOpen-source project
Account, payment, and exit
Access scopeNot yet reviewed at this level.Sewer searching pattern records or organizing patterns, projects, fabric, notions, and private files.Weaver deciding whether viewing a draft is enough or a working WIF file and editing tools are required.Not yet reviewed at this level.
Before an accountNot yet reviewed at this level.Browse the pattern database, guide, designers, publications, and public community areas without creating an account.Browse the Ralph Griswold archive, download archive documents, and view draft drawdowns without a paid subscription.Not yet reviewed at this level.
Free-account boundaryNot yet reviewed at this level.A free account needs no card and supports a stash, wishlist, projects, reviews, and personal organization.A free basic account adds clipboards. Full drafts, working files, and browser drafting tools remain outside the free account.Not yet reviewed at this level.
Payment boundaryNot yet reviewed at this level.Plus adds PDF pattern storage, collections, saved searches, bulk editing, and other workflow features on monthly or annual billing.A monthly or annual recurring subscription unlocks full drafts, WIF downloads, and browser drafting and editing tools.Not yet reviewed at this level.
Cancellation or exitNot yet reviewed at this level.Cancel through an in-account link. Paid features remain through the current billing cycle, then the account returns to free features.Cancel from the account page. Renewal stops at the next renewal date, paid access remains until then, and the provider states that refunds are not given.Not yet reviewed at this level.
Saved work and dataNot yet reviewed at this level.The terms say submitted materials remain yours, but the checked public pages do not explain a full export or how stored PDFs behave after downgrade. Keep originals outside the platform.The checked page does not explain bulk export or deletion for clipboards or contributed drafts. Retain local copies of WIF files and source material before exit.Not yet reviewed at this level.
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. Current terms state that the free plan requires no card, paid upgrades start billing immediately, cancellation retains paid features through the current cycle, and the account then returns to free features.Handweaving.net currently exposes the Ralph Griswold digital archive, document downloads, draft drawdown views, basic-account clipboards, and video tutorials without a paid subscription. Its subscription page reserves full drafts, WIF downloads, draft creation and editing, color tools, profile and block substitution, arrangement, repeats, and related browser tools for subscribers. The current page states that plans renew until canceled, cancellation takes effect at the next renewal, access remains until then, and refunds are not offered.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.
Linked page reviewedJul 27, 2026Jul 28, 2026Jul 28, 2026Jul 21, 2026
Next review dueJul 27, 2027Jan 24, 2027Jan 24, 2027Jan 17, 2027
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