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| Decision field | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Free accountFOURSOURCE Supplier NetworkGlobalRemove | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Source production | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Production | Patterns & fit | Yarn |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Searching global apparel and textile production capabilities | Checking a common flat-pattern alteration method | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes |
| Know before using | 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 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. | 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. | 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. |
| Practical access | ||||
| For | Apparel brands | Apparel brands | Makers | Makers |
| Location or jurisdiction | Global | Global | United States · North America | European Union |
| Access | Open access | Free account | Open access | Open access |
| Format | Stitch Authority | Marketplace | Reference | Directory |
| Source type | Stitch Authority | Commercial marketplace | Government guidance | Community database |
| Source and review | ||||
| What the source establishes | 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. | 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. | 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 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. |
| Linked page reviewed | Jul 27, 2026 | Jul 21, 2026 | Jul 21, 2026 | Jul 15, 2026 |
| Next review due | Jul 27, 2027 | Jan 17, 2027 | Oct 19, 2026 | Jan 11, 2027 |
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