Skateboard bushings
cults3d
Selection of bushings for skateboard trucks. I printed some in Ninjaflex at 100% infill and they felt similar to extra soft bushings, don't know how long they'll last though. Update: I've just done a little research on Ninjaflex and it has a hardness of 85a, in comparison Bones soft bushings are 81a. Semiflex is 98a and Bones hard bushings are 96a. It also appears that it is a thermoplastic polyurethane the same as skateboard bushing and wheels so should be ok if printed solid. In theory you should be able to print some pretty decent wheels in Semiflex. I think I must have lost some hardness from the quality of the print of my bushing. Use at your own risk.
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