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| Decision field | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Free + paidPatternReviewGlobalRemove | Quote-basedMaterial ExchangeGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Learn techniques | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Yarn | Patterns & fit | Materials |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Finding member reports about a named sewing pattern | Evaluating an enterprise material-sourcing workflow after requirements are defined |
| Know before using | 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 shared nominal diameter does not make a knitting needle and crochet hook interchangeable or predict equal gauge or fabric. The reference is not a physical measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, or project approval. | PatternReview combines community reports, membership, education, advertising, and retail, so it is not a neutral or complete pattern index. Reviews are individual experiences rather than standardized fit tests. Confirm the exact pattern version, size range, measurements, fabric, format, errata, licence, seller terms, and current availability with the designer or publisher. Paid catalogue and search features do not establish an export route or continued access after membership ends. | The public site’s workflow, security, validation, and outcome statements are operator claims rather than independent performance evidence. The Sourcing Hub, Marketplace, and Digital Sourcing Platform have separate terms and must not be treated as one identical product. Supplier content, uploaded certificates, and AI suggestions are leads, not independent verification. Verify the exact product and Order, material identity and performance, certificate issuer and validity, supplier capability, samples, price, availability, commercial terms, data permissions, and any AI output before a sourcing decision. |
| Practical access | ||||
| For | Apparel brands | Makers | Makers | Apparel brands |
| Location or jurisdiction | Global | Global | Global | Global |
| Access | Open access | Open access | Free + paid | Quote-based |
| Format | Stitch Authority | Stitch Authority | Community | Software |
| Source type | Stitch Authority | Stitch Authority | Community database | First-party platform |
| Account, payment, and exit | ||||
| Access scope | Not yet reviewed at this level. | Not yet reviewed at this level. | Sewer reading community pattern reports, participating in discussions, or keeping a personal pattern catalogue and wishlist. | Business brand, supplier, manufacturer, or sourcing team considering Material Exchange’s current invite-only Sourcing Hub powered by Frank for early-stage material and supplier work. |
| Before an account | Not yet reviewed at this level. | Not yet reviewed at this level. | Browse recent pattern reviews, the review gallery, shop, classes, blog, and public help pages without creating an account. | Read the public workflow, security, and legal explanations and request a demo. The checked signed-out pages do not expose the live Sourcing Hub, supplier or material catalogue, configured feature scope, trial entitlement, or price. |
| Free-account boundary | Not yet reviewed at this level. | Not yet reviewed at this level. | Free membership requires email activation. The account FAQ says most participation and member-only areas require sign-in. | Sourcing Hub registration is invite only and managed by the Material Exchange team. An Order defines each organisation’s authorized service scope and term; the terms say some services may be free and trials may be offered, but the public pages do not promise either. Individualised logins may not be shared. |
| Payment boundary | Not yet reviewed at this level. | Not yet reviewed at this level. | Friends of PR costs $34.95 per year and adds advanced search, a personal pattern catalogue and wishlist, bookmarks, classifieds, discounts, and other features. | No public fee amount is disclosed. Orders or separate agreements define subscription and service charges; paid services may combine a one-time charge with automatically renewing monthly, quarterly, or annual charges. Orders are described as non-cancellable and non-refundable. Supplier transaction fees, sample shipping, scanning, customs, taxes, and separately negotiated services can be additional costs. |
| Cancellation or exit | Not yet reviewed at this level. | Not yet reviewed at this level. | Friends of PR recurs on its plan cycle. The account FAQ says an advance email includes cancellation instructions and also publishes an email cancellation route. | Users terminate through support, while paid-service exit can also depend on a separate agreement. The public terms say access can continue through the current term, there is no prorated refund, and renewal stops after termination; they also warn that account termination may destroy associated content. Confirm the required notice, receipt, final access date, and content-return terms in the Order before paying. |
| Saved work and data | Not yet reviewed at this level. | Not yet reviewed at this level. | Paid tools can hold a pattern catalogue, wishlist, bookmarks, and photos, but the checked pages do not establish a complete export or post-membership retention route. Keep critical records elsewhere. | The Sourcing Hub can hold company and user details, sourcing briefs, supplier and material records, files, certificates, prices, compliance data, messages, samples, and detailed transaction records. Users retain ownership of submitted content, but termination may destroy it. The data notice covers personal-data access and portability and says residual copies may remain in active servers or backups; it does not document a self-service complete business-content export, format, or timing. Keep source files outside the platform and negotiate business-data return or export terms. |
| Source and review | ||||
| What the source establishes | 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. | Rechecked July 28, 2026. The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows, aligns hooks and needles only when their nominal millimetre value matches, and leaves missing rows or aliases unfilled. | PatternReview's current site exposes recent pattern, sewing-machine, and store reviews, forums, contests, classes, classifieds, a pattern shop, and a searchable review gallery. Its account FAQ says most participation requires a free activated account. Friends of PR adds advanced search, a personal pattern catalogue and wishlist, bookmarks, classifieds, a photo album, discounts, and other features through a recurring paid membership with a published email cancellation route. | Material Exchange’s current site presents an enterprise early-stage sourcing workflow and routes prospective customers to a demo. Its Sourcing Hub terms, last modified October 24, 2025, define invite-only registration, AI-assisted material discovery, sample requests, bulk inquiries, negotiation, order-defined service access, subscriptions, and supplier transaction fees. The same terms say Material Exchange cannot verify uploaded certificate statements. |
| Linked page reviewed | Jul 27, 2026 | Jul 28, 2026 | Jul 28, 2026 | Jul 28, 2026 |
| Next review due | Jul 27, 2027 | Jul 28, 2027 | Jan 24, 2027 | Jan 24, 2027 |
| Inspect | ||||
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