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| Decision field | Free accountFOURSOURCE Supplier NetworkGlobalRemove | PaidTUKAcadGlobalRemove | Open accessCPSC Certificate eFilingUnited States · North AmericaRemove | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Find patterns & fit | Check standards | Learn techniques |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Production | Patterns & fit | Standards | Yarn |
| Best for | Searching global apparel and textile production capabilities | 2D patternmaking and grading with public plan tiers | Planning the current CPSC certificate-data handoff for regulated imports with the importer, finished-product certifier, customs broker, and entry records | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge |
| Know before using | The company count is a changing platform claim. Search fields, profiles, certificates, locations, and account access do not independently verify the legal entity, factory ownership, capability, capacity, certificate validity or scope, compliance performance, delivery, or project fit. Confirm the site and subcontracting, credentials with issuers, samples, audits when appropriate, specifications, contracts, and commercial terms. | TUKAcad is Windows software; the official Mac route requires a separate virtual Windows environment. Pattern-piece, graded-size, marker, import and export, digitizing, and production-output capabilities vary materially by paid tier. A CAD file or marker report does not prove fit or factory readiness, so verify formats, grade rules, seam and production data, hardware, training, and downstream compatibility before subscribing. | 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. | A shared nominal diameter does not make a knitting needle and crochet hook interchangeable or predict equal gauge or fabric. The reference is not a physical measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, or project approval. |
| Practical access | ||||
| For | Apparel brands | Both | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | United States · North America | Global |
| Access | Free account | Paid | Open access | Open access |
| Format | Marketplace | Software | Reference | Stitch Authority |
| Source type | Commercial marketplace | First-party platform | Government guidance | Stitch Authority |
| Source and review | ||||
| What the source establishes | FOURSOURCE's current public network page presents an operator-reported global company count and country or territory search. It says logged-in users can narrow results by compliance certificates, product groups, fabric types, target groups, minimum order quantities, and other fields, with a free-trial and supplier sign-up route. | Tukatech's current TUKAcad page publishes monthly Learning and Professional editions for digital patternmaking and grading, with a higher tier adding marker making, data import and export, digitizing, cut-data optimization, and yield reports. It discloses plan limits on pattern pieces, graded sizes, and marker dimensions, plus built-in help, block templates, a trial, Windows requirements, and the Windows-on-Mac route. | 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. | Rechecked July 28, 2026. The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows, aligns hooks and needles only when their nominal millimetre value matches, and leaves missing rows or aliases unfilled. |
| Linked page reviewed | Jul 21, 2026 | Jul 21, 2026 | Jul 16, 2026 | Jul 28, 2026 |
| Next review due | Jan 17, 2027 | Jan 17, 2027 | Oct 14, 2026 | Jul 28, 2027 |
| Inspect | ||||
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