White 431 Stitch Length Knob and cam

White 431 Stitch Length Knob and cam

grabcad

This part replaces the stitch length assembly of a White 431 sewing machine. The original part succumbed to zinc-rot, causing the knob to be unable to rotate.The part may need to be tweaked a bit, but worked for me on the first try...I printed with about 0.3mm layer height. Thinner is probably better so that the cam is more smooth.

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