About this 3D model

Designed to fit what appears to be a 1/4" (.250") D-shaped shaft. My washing machine happens to be a "Magic Chef" brand, but this knob should fit pretty much anything with a recessed shaft of these dimensions. The washing machine uses the same knob for the load size ('water saver') settings and for the hot/warm/cold water temp settings. Replacement knobs for appliances can be purchased for between $15 and $30, which seems ridiculous. Printing the knob used about 10 grams of material, for a cost of about 50 cents for premium PLA and about 35 cents for standard filament.