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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Free + paidPattern TestersGlobalRemove | PaidPatternLab LondonGlobalRemove | Free accountFOURSOURCE Supplier NetworkGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Find patterns & fit | Find patterns & fit | Source production |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Yarn | Patterns & fit | Patterns & fit | Production |
| Best for | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Coordinating an independent sewing-pattern test | Generating an editable custom-measurement block | Searching global apparel and textile production capabilities |
| Know before using | 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. | The interface and plan description do not prove tester reach, completion, feedback quality, fit validity, export quality, uptime, support, or suitability for an established release process. Measurements and photos can be sensitive personal data. Run a non-critical pilot, review the current privacy and service terms, define consent and photo rights, test exports and deletion, and keep pattern approval and release responsibility with the designer. | A measurement-generated draft is a starting block, not independent evidence of body capture, comfort, mobility, balance, garment ease, or production fit. The result depends on measurement accuracy, supported ranges, formula assumptions, selected options, and output handling. Review the service's privacy terms before storing body data and sew a representative toile before design, grading, or production use. | 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. |
| Practical access | ||||
| For | Makers | Apparel brands | Both | Apparel brands |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Free + paid | Paid | Free account |
| Format | Stitch Authority | Software | Software | Marketplace |
| Source type | Stitch Authority | First-party platform | First-party platform | Commercial marketplace |
| Source and review | ||||
| What the source establishes | 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. | Pattern Testers currently offers application intake, tester selection, feedback, photos, approvals, issue tracking, revisions, a reusable tester directory, and release deadlines. The public pricing page shows a limited free plan and paid Pro and Business tiers. Its June 2026 privacy policy lists names, email addresses, measurements, photos, feedback, application history, and assignments among the data processed. | PatternLab London's current drafting page says a user creates a measurement profile, selects a basic block or sloper, adjusts fit, dart placement, length, seam allowance, and sleeve options, then downloads the generated result as tiled PDF, AI, or SVG. The live catalogue names bodice, dress, trouser, and stretch blocks and displays a price before purchase. | 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. |
| Linked page reviewed | Jul 28, 2026 | Jul 21, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 28, 2027 | Jan 17, 2027 | Jan 17, 2027 | Jan 17, 2027 |
| Inspect | ||||
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