The only problem is that its multi-step zig-zag stitch is a ... [GYOC] set out to learn Tinkercad and grow their own sewing machine parts. The new zig-zag top hat cam in place.

The various parts of a sewing machine. [Public domain], via Wikimedia ... will be the needle bar with the needle attached to its bottom, while behind it will be the presser foot bar.

the sewing-machine is to the domestic. The application of machinery to the purposes of sewing is of recent date, yet it has quietly worked its way into a position of great importance, not only in ...