I was building a controller and needed to drill a hole for a receptacle but the only hole saw I has was a littler bigger than needed. A quick bushing in SCAD and in 5 minutes a perfect fit…
You can get fancy with Hull or Minkowski too
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What machine/material did you use?
I used a Dremel 3D printer with PLA filament but any 3D machine would be good. Nylon might have been a better choice but the Dremel only uses PLA.
I want to experiment with sintered Bronze Filament to make linear slide bearings. they say its real Bronze so lets see what happens. They also have copper and conductive plastics that might be good for some circuit bending tricks.