Corona 3 Typewriter Foot

thingiverse

These are replacement feet for the Corona 3 typewriter from about 100 years ago. These amazing little machines typically still work great today, except the original rubber feet are long reduced to mush. I designed these to be nearly an identical replacement, but with the advantages of modern technology we can engineer materials that were previously impossible. I printed with Ninjaflex black TPU, which is nearly indestructible, flexible, and pretty gripping on most surfaces. I slice the bottom at 100% (solid), but after a few layers for adhesion strength I sliced the top at 20% with a gyroid pattern. The top is not load bearing, but merely slides into the socket to hold it in place, then the machine rests on the solid bottom part. The top is still super strong, but is more easily compressed to install into the typewriter. Pretty cool. Some people may prefer the dull rubber look, but I actually think these are a superior look to rubber, and the glossy finish better matches the rest of the machine.