Mandrel Bench opens.

The app three tools share one mandrel: the stitch math (spacings, thread lengths, leather weights), the whip taper (strands, lace, drops), and the knots (Turk heads and Gauchos by bights and leads). The knowledge stays free right here; the app prints everything at true size to work straight from.

Bracelet sizing and handle wraps finished the tools — all offline, no account.

The shelf fills as builds pass review — Knot TV plays real clips, and the blog feed carries every note.