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| Decision field | Open accessHook & Needle Diameter ReferenceGlobalRemove | Open accessControlled Tech Pack OrientationGlobalRemove | Open accessCPSC Certificate eFilingUnited States · North AmericaRemove | Free downloadSeamly2DGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Source production | Check standards | Find patterns & fit |
| Area | Yarn | Production | Standards | Patterns & fit |
| Best for | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge | Understanding what a tech pack must control before using a template or releasing work | Planning the current CPSC certificate-data handoff for regulated imports with the importer, finished-product certifier, customs broker, and entry records | Digital pattern drafting |
| Know before using | 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. | 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. | The portal does not decide whether a product requires certification, identify the correct rules or certificate data, classify an entry, replace the current 16 CFR part 1110 text, or reconcile a filing to an actual shipment. Effective dates and workflows differ by entry route; use current CPSC, CBP, customs, product-safety, and legal review. | 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 | ||||
| For | Makers | Apparel brands | Apparel brands | Both |
| Location or jurisdiction | Global | Global | United States · North America | Global |
| Access | Open access | Open access | Open access | Free download |
| Format | Stitch Authority | Stitch Authority | Reference | Software |
| Source type | Stitch Authority | Stitch Authority | Government guidance | Open-source project |
| Source and review | ||||
| What the source establishes | 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. | 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. | CPSC operates the eFiling portal with role-specific importer, broker, applicability, Product Registry, regulated-product, laboratory, ACE, FAQ, video, and document-library routes. The certificate final rule took effect July 8, 2026 for covered non-FTZ products, with separate timing for covered FTZ entries. | 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 reviewed | Jul 16, 2026 | Jul 16, 2026 | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jul 16, 2027 | Oct 14, 2026 | Jan 17, 2027 |
| Inspect | ||||
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