sewing machine winder rubber ring - Wicklergummi Nähmaschine
thingiverse
The winder rubber ring of my old sewing machine Singer from around 1900 was not usable anymore. It was not possible to find a new fitting one. So I created a fitting o-ring. It has the dimension of 43 mm (outer) and 25.5 mm (inner diameter). You need to use a flexible material like TPU. I do not remember the infill because the dremel slicer does not store the self made profiles (or I'm too dump to do that), but the ring broke with too less infill, so try 50 or 100%.
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