They needed an array of plastic cams to do different stitches, kind of like trading out the element or disk in a typewriter to print in italics. So once upon a time, sewing machines didn’t just do a bunch of things out of the box. Having heard it was possible to hack them into doing a 3-step, set out to learn Tinkercad and grow their own sewing machine parts. The only problem is that its multi-step zig-zag stitch is a 4-stepper and not a 3-step, which is what prefers. This is a well-respected workhorse of a machine, and if you see one in a secondhand store, you might want to grab it. Had finally found their ideal sewing machine for doing zig-zag stitches (/\/\/\) and converting to a treadle drive (mechanically foot-fed) - a Singer 411G.
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