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| Decision field | Open accessControlled Tech Pack OrientationGlobalRemove | Open accessFreeSewingGlobalRemove | Open accessFabric Mass Unit ConverterGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Source production | Find patterns & fit | Choose materials |
| Area | Production | Patterns & fit | Materials |
| Best for | Understanding what a tech pack must control before using a template or releasing work | Custom-fit home sewing patterns | Translating the same fabric mass-per-area result between metric and U.S. customary listings |
| Know before using | An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority. | A generated pattern is not independent fit evidence or a production-ready graded block. The result still depends on accurate measurements, the selected design and options, ease assumptions, fabric behavior, construction, and representative test garments. An account stores saved patterns and measurement sets, so review the platform's privacy terms before retaining personal measurements. | 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 | Apparel brands | Makers | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Software | Stitch Authority |
| Source type | Stitch Authority | Open-source project | Stitch Authority |
| Source and review | |||
| What the source establishes | The guide cites current ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it explicitly separates those authorities from product-specific technical and market decisions. | FreeSewing's official documentation says the browser editor drafts a selected design in real time from a measurement set rather than scaling or grading a standard-size pattern. Users can adjust design options and export the generated result, including as PDF; saving the pattern to an account is optional and is used to revisit it later. | 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 16, 2026 | Jul 21, 2026 | Jul 16, 2026 |
| Next review due | Jul 16, 2027 | Jan 17, 2027 | Jul 16, 2027 |
| Inspect | |||
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