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| Decision field | Free accountWoolmark Learning CentreGlobalRemove | Open accessYarnSubGlobalRemove | Open accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove | Open accessHook & Needle Diameter ReferenceGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Choose materials | Find patterns & fit | Learn techniques |
| Area | Techniques & repair | Yarn | Patterns & fit | Yarn |
| Best for | Structured wool education | Replacing a discontinued or unavailable yarn | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge |
| Know before using | 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. | A suggested match is a data-based shortlist, not proof that the yarn suits the pattern or maker. Yarn records can be incomplete or wrong, prices and availability vary by market, and the site uses affiliate links. Confirm the required gauge, total length, fibre behavior, construction, care, color, dye lot, accessibility, and seller terms, then make and assess a representative swatch before committing. | The record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review. | 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 | Both | Makers | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Free account | Open access | Open access | Open access |
| Format | Reference | Reference | Stitch Authority | Stitch Authority |
| Source type | Industry organization | First-party platform | Stitch Authority | Stitch Authority |
| Source and review | ||||
| What the source establishes | 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. | YarnSub's official FAQ says its matching software compares gauge, texture, yarn weight and density, fibre content, and fibre qualities such as drape and softness. Discontinued yarns remain searchable as starting points but are excluded from suggested replacements, and each yarn page provides a route to report source-data problems. | The guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments. | 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 21, 2026 | Jul 21, 2026 | Jul 16, 2026 | Jul 16, 2026 |
| Next review due | Jan 17, 2027 | Jan 17, 2027 | Jul 16, 2027 | Jul 16, 2027 |
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