Methodology

How the sheets are made

Here we explain where the data comes from, where the work of automation ends and where a person's begins.

SewingSpecs is an independent catalogue: we don't sell machines and we are not a shop. The spec sheets are checked one by one against the manufacturer's site, and every figure carries its source and its date. If you find a wrong one, let us know.

The data comes from the source, not from us

Technical specifications come from the manufacturer's official website, manuals and data sheets: next to every value are the page it was read from and the date it was recorded. We don't rewrite from memory: we read the source. If a value can't be verified, it stays empty — better a missing field than an invented number.

Our texts are written with the help of AI

Descriptions, pros and cons and translations are drafted with the help of artificial intelligence, starting from the sheet's data and the manufacturer's sources. The numbers don't come from the AI but from the cited source, and in review the text is checked against the sources: any claim they don't support is removed. Comparisons between two machines are composed automatically from the data of the two sheets, and the page says so.

Every sheet says who made it

Spec sheets and guides carry the SewingSpecs byline and the date of the last check. The bio next to the byline says how we work, not how good we are: we are a group, and anyone who joins with a role of their own will appear under their own name. Comparisons composed from the data carry no byline, and say so at the top of the page.

Data and opinions stay separate

A technical value always has a source. An editorial judgment — strengths, caveats, who a machine suits — is stated as such. We avoid brochure adjectives ("revolutionary", "best-in-class"): if something is good, you can see it from the numbers and the context.

The use tier is not a price range

The use tier — from F1 entry to F5 professional — says who a machine is designed for, from beginners to people working behind a bar counter. It isn't derived from the price: machines with very different prices sit in the same tier, and the price is shown separately.

Prices have a date

We don't publish selling prices, which change all the time. When the manufacturer publishes a list price we report it as such; otherwise we show a range estimated by the editors, labelled as an estimate. Both carry the month they were recorded, and for today's price we refer you to the seller.

How we sustain ourselves

Affiliate links keep SewingSpecs running: if you buy through here, a small share comes back to the site and covers its costs, at no extra cost to you. No commission buys a verdict.