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| Decision field | Open accessCPSC Certificate eFilingUnited States · North AmericaRemove | Free downloadSeamly2DGlobalRemove | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove | Open accessHook & Needle Diameter ReferenceGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Check standards | Find patterns & fit | Find patterns & fit | Learn techniques |
| Area | Standards | Patterns & fit | Patterns & fit | Yarn |
| Best for | Planning the current CPSC certificate-data handoff for regulated imports with the importer, finished-product certifier, customs broker, and entry records | Digital pattern drafting | Checking a common flat-pattern alteration method | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge |
| Know before using | 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. | The guide's general womenswear diagrams and ease ranges are teaching examples, not an individual diagnosis, current commercial-pattern specification, or complete fitting course. A named symptom can have several causes, and alterations may affect adjoining seams, facings, collars, sleeves, balance, and style. Verify the method against the exact pattern and test the coordinated changes on a muslin. | 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 | ||||
| For | Apparel brands | Both | Makers | Makers |
| Location or jurisdiction | United States · North America | Global | United States · North America | Global |
| Access | Open access | Free download | Open access | Open access |
| Format | Reference | Software | Reference | Stitch Authority |
| Source type | Government guidance | Open-source project | Government guidance | Stitch Authority |
| Source and review | ||||
| What the source establishes | 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. | New Mexico State University's current Cooperative Extension Guide C-228 explains three alteration methods, folding out fullness, slashing and spreading or overlapping, and redrawing darts or seams. It provides illustrated bodice, sleeve, skirt, and trouser examples and tells readers to compare body measurements plus intended ease with the pattern while preserving grain, design lines, related-piece changes, and comfort ease. | 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 reviewed | Jul 16, 2026 | Jul 21, 2026 | Jul 21, 2026 | Jul 16, 2026 |
| Next review due | Oct 14, 2026 | Jan 17, 2027 | Oct 19, 2026 | Jul 16, 2027 |
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