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| Decision field | Open accessApparel Measurement Tolerance Setting RecordGlobalRemove | Free downloadSeamly2DGlobalRemove | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Open accessKnitting Stitch LibraryGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Source production | Find patterns & fit | Find patterns & fit | Learn techniques |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Production | Patterns & fit | Patterns & fit | Techniques & repair |
| Best for | Turning an inherited or proposed garment tolerance into a controlled POM method, capability study, decision boundary, inspection rule, and change record | Digital pattern drafting | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Learning or comparing knit structures |
| Know before using | The record does not supply universal POM values, validate fit across a population, prove process capability, choose a statistical study or sampling plan, reproduce licensed standards, or replace qualified technical, fit, quality, statistical, safety, compliance, and legal review. | Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels. | 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. | A foundational library, not yet an exhaustive stitch encyclopedia. |
| Practical access | ||||
| For | Apparel brands | Both | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Free download | Open access | Open access |
| Format | Stitch Authority | Software | Stitch Authority | Stitch Authority |
| Source type | Stitch Authority | Open-source project | Stitch Authority | Stitch Authority |
| Source and review | ||||
| What the source establishes | The guide cites current ISO, AATCC, and NIST sources for body and garment measurement boundaries, textile conditioning, dimensional-change testing, repeatability and reproducibility, and AQL-indexed sampling, while requiring the live product owner to set rather than inherit numerical tolerances. | The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum. | 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 linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. |
| Linked page reviewed | Jul 15, 2026 | Jul 21, 2026 | Jul 27, 2026 | Jul 15, 2026 |
| Next review due | Jul 15, 2027 | Jan 17, 2027 | Jul 27, 2027 | Jul 15, 2027 |
| Inspect | ||||
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