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| Decision field | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove | Open accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove | Open accessFabric Mass Unit ConverterGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Choose materials | Find patterns & fit | Find patterns & fit | Choose materials |
| Area | Yarn | Patterns & fit | Patterns & fit | Materials |
| Best for | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes | Checking a common flat-pattern alteration method | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Translating the same fabric mass-per-area result between metric and U.S. customary listings |
| Know before using | 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. | 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 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 result is a numerical unit conversion, not a new measurement or conformance decision; it does not establish sample or lot representativeness, significant digits, drape, warmth, opacity, thickness, stretch, strength, shrinkage, durability, sewability, end use, target, or tolerance. |
| Practical access | ||||
| For | Makers | Makers | Apparel brands | Both |
| Location or jurisdiction | European Union | United States · North America | Global | Global |
| Access | Open access | Open access | Open access | Open access |
| Format | Directory | Reference | Stitch Authority | Stitch Authority |
| Source type | Community database | Government guidance | Stitch Authority | Stitch Authority |
| Source and review | ||||
| What the source establishes | 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. | 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 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 calculator uses the NIST SP 811 Appendix B.8 conversion from avoirdupois ounces per square yard to kilograms per square metre and links to a source-reviewed fabric mass record for method, sampling, conditioning, and product controls. |
| Linked page reviewed | Jul 15, 2026 | Jul 21, 2026 | Jul 16, 2026 | Jul 16, 2026 |
| Next review due | Jan 11, 2027 | Oct 19, 2026 | Jul 16, 2027 | Jul 16, 2027 |
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