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Common questions
Is any of this for sale?
No. There is no shop, no affiliate link and no advertising anywhere on this site.
Can I use these figures for a commercial project?
Yes — they are typical published ranges. But sample your own yarn before you commit a production warp.
Why does the 3D tool show a 2D version?
Your device or browser does not report WebGL, or you are on a small screen where the tool defers the library by default. The 2D version keeps every calculation.
Do you store anything about me?
No. There is no analytics, no cookie and no server-side storage. See the privacy page for the detail.