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| Decision field | Open accessSeam Allowance ConverterGlobalRemove | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove | Free accountWoolmark Learning CentreGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Choose materials | Learn techniques |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Yarn | Techniques & repair |
| Best for | Translating a seam allowance already stated by a pattern or controlled specification | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes | Structured wool education |
| Know before using | This is a unit-translation reference. It does not select, approve, or change a seam allowance; establish a universal fraction; interpret an unstated cutting or stitching line; or replace the exact pattern version, controlled specification, material and seam evidence, sample, production method, equipment, tolerance, or release authority. | It is one curator's intentionally selective, off-Ravelry-oriented database, inventories change, and paid supporters can receive rotating priority placement; verify availability, fibre claims, shipping, and terms directly. | This is Woolmark-operated education focused on wool, not a neutral comparison of all fibres or processing systems. A completion badge records coursework, not independent proof of production competence, product performance, environmental impact, or compliance. Confirm technical values and local requirements against current standards before production use. |
| Practical access | |||
| For | Both | Makers | Both |
| Location or jurisdiction | Global | European Union | Global |
| Access | Open access | Open access | Free account |
| Format | Stitch Authority | Directory | Reference |
| Source type | Stitch Authority | Community database | Industry organization |
| Source and review | |||
| What the source establishes | NIST states that one inch is exactly 25.4 millimetres, and the SI decimal relationship makes one centimetre equal to 10 millimetres. The tool uses those factors, displays rounded equivalents, exposes the size difference to the nearest 1/16 inch when converting to inches, and preserves valid value, source-unit, and target-unit state in the URL. | The individually researched database offers free listings and sortable yarn, fibre, designer, editor, accessory, and location views; the EU page spans multiple countries and direct seller profiles. | The current Woolmark Learning Centre library publishes free account-based coursework with module counts, completion times, progress tracking, knowledge checks, and supporting resources. Its wool programs cover fibre science, raw-wool and yarn processing, dyeing and finishing, woven textiles, knitwear, product quality, and wastewater management for learners and facilitators. |
| Linked page reviewed | Jul 28, 2026 | Jul 15, 2026 | Jul 28, 2026 |
| Next review due | Jul 28, 2027 | Jan 11, 2027 | Jan 24, 2027 |
| Inspect | |||
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