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| Decision field | Open accessHook & Needle Diameter ReferenceGlobalRemove | Open accessConstruction Classification & Callout Verification RecordGlobalRemove | Open accessControlled Tech Pack OrientationGlobalRemove | Open accessFreeSewingGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Learn techniques | Source production | Source production | Find patterns & fit |
| Area | Yarn | Production | Production | Patterns & fit |
| Best for | Checking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge | Using construction codes without treating classification as a machine setting, material assignment, supplier translation, or performance guarantee | Understanding what a tech pack must control before using a template or releasing work | Custom-fit home sewing patterns |
| Know before using | 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. | The record does not reproduce licensed code diagrams, verify a user's proposed code, authorize an ISO and ASTM crosswalk, select a construction, set stitch density or machine settings, prove supplier repeatability or performance, or replace the licensed standards and qualified construction, sewing, production, testing, safety, and quality review. | 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. |
| Practical access | ||||
| For | Makers | Apparel brands | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Open access | Open access |
| Format | Stitch Authority | Stitch Authority | Stitch Authority | Software |
| Source type | Stitch Authority | Stitch Authority | Stitch Authority | Open-source project |
| Source and review | ||||
| What the source establishes | 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. | The guide cites the current public scopes and statuses of ISO 4915:1991, ISO 4916:1991, and ASTM D6193-16(2025), plus current seam-failure and seam-tensile methods; it keeps classification, translation, complete process definition, physical verification, and performance evidence separate. | 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. |
| Linked page reviewed | Jul 16, 2026 | Jul 16, 2026 | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jul 16, 2027 | Jul 16, 2027 | Jan 17, 2027 |
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