About.

Mandrel Bench backs one Android app — the knot bench (the stitches, the whips, the Turk's heads). Three tools share one mandrel, and everything prints at true size. The craft knowledge on this site is the free half; the app puts it to work.

It belongs to the maker-app family — Bead, Fiber, Cultured, Play and Fabrication benches, all with their doors open.