# Stitch Authority resource comparison Generated: 2026-08-02T07:16:08.731Z Comparison: This file preserves the published decision metadata for the selected routes. It is not a recommendation, provider approval, compliance decision, or record of project-specific due diligence. ## 1. Fabric Mass & Purchase-Comparison Record Permanent record: Source page: - Primary job: Choose materials - Area: Materials - For: Both - Location or jurisdiction: Global - Access: Open access - Format: Stitch Authority - Source type: Stitch Authority - Linked page reviewed: 2026-07-16 - Next review due: 2027-07-16 ### Best for Replacing universal light, mid, and heavyweight charts with comparable fabric evidence and product-specific decisions ### What the source establishes The guide cites current ASTM and ISO sources for fabric mass per unit area, woven-fabric mass, sampling, conditioning, stiffness, and thickness plus the NIST conversion table; it separates method-defined measurements from product-defined targets, tolerances, and suitability. ### Know before using The record does not provide universal fabric-weight classes, garment recommendations, test values, targets, tolerances, sampling counts, lot acceptance, drape or performance conclusions, compliance, or a substitute for representative swatches, product trials, and qualified textile, testing, product, quality, safety, sourcing, and compliance review. ## 2. Threadloop Sewing Pattern Database Permanent record: Source page: - Primary job: Find patterns & fit - Area: Patterns & fit - For: Makers - Location or jurisdiction: Global - Access: Free account - Format: Community - Source type: Community database - Linked page reviewed: 2026-07-21 - Next review due: 2027-01-17 ### Best for Searching current and out-of-print sewing patterns ### What the source establishes Threadloop's official guide describes an independent, fully crowdsourced database covering available and out-of-print sewing patterns. Its search supports pattern type, fabric type, age group, body type, cup size, level, format, file features, language, measurements, availability, and other filters; members can also track a stash, wishlist, projects, reviews, and discussions. ### Know before using Community members add and quality-control the records, so confirm sizing, measurements, fabric suggestions, format, availability, errata, license, and purchase terms with the designer or publisher. Adding an entry to a stash does not provide the pattern files. Saved searches and private PDF storage are paid Plus features, and a listing or review does not establish pattern accuracy or fit. ## Next checks 1. Remove any route whose audience, jurisdiction, access, or scope does not match the job. 2. Open the permanent record and source page for every remaining route. 3. Recheck facts that can change after the listed review date. 4. Verify project-specific capability, terms, test evidence, and legal requirements with the responsible source or provider. 5. Record the reason for the final choice outside Stitch Authority.