Simple Tire with Caster
thingiverse
Simple caster and tire. Print the wheel, then print the caster. You will need a 3/8 inch metal rod and push on caps from the hardware store for the axle and caster at the top. The concept is to take a 3 inch piece of metal rod, glue it into the top, then drill a hole in the object you want to mount the wheel/caster on. Insert the 3 inch metal rod into the newly drilled hole, then use push caps to secure the caster to the new object. In my case, the caster is being attached to a standard 2x4 wooden beam. Designed with OpenScad, feel free to modify parameters as needed. Not fully parameterized, but close enough for now.
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