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| Decision field | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove | Open accessSwatch-to-Area Yarn EstimatorGlobalRemove |
|---|---|---|
| Decision fit | ||
| Primary job | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Yarn |
| Best for | Checking a common flat-pattern alteration method | Documenting a bounded sample-to-area yarn calculation when the equivalent area is already known and genuinely comparable with the sample |
| Know before using | 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 worksheet does not establish that a sample represents a project, derive the area of shaped pieces, account for construction or openings, prescribe reserve, supply typical project quantities, round to packages, verify label values, guarantee required quantity, check dye-lot supply, or replace a tested pattern amount. Yarn, tool, maker, strand count, stitch or texture, density, treatment, finishing, planned area, and supply decisions remain project-specific. |
| Practical access | ||
| For | Makers | Makers |
| Location or jurisdiction | United States · North America | Global |
| Access | Open access | Open access |
| Format | Reference | Stitch Authority |
| Source type | Government guidance | Stitch Authority |
| Source and review | ||
| What the source establishes | 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 worksheet performs visible proportional arithmetic on user-entered sample dimensions, sample yarn length or weight-derived length, equivalent area, and optional reserve. Craft Yarn Council pattern-writing guidance says yarn amounts and package counts should be recorded in instructions, and its consumer guidance ties project instructions to a stated yarn amount and representative gauge; those sources do not establish a universal sample-to-area method, project range, or reserve. NIST defines 1 yard as exactly 0.9144 metre for the secondary unit display. |
| Linked page reviewed | Jul 21, 2026 | Jul 28, 2026 |
| Next review due | Oct 19, 2026 | Jul 28, 2027 |
| Inspect | ||
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