Lego EV3 Caster ball with 16 mm marble ball
thingiverse
Inspired by thing:2627005, thank you jpnurro. This ball caster was designed for 16 mm ball, in mine case ball is made out of glass (marble). (steel balls works better, but i don't know where you can find a 16 mm one). Inner diameter is 16.8 mm, outer is 22.5 mm. I recommend to print this thing at layer 0.1 mm, thing is upside down in the file. 04.04: Edited it a little bit: now sphere is 0.5 mm higher than it was before. Step and Kompas-3d V17 files are available in archive. All dimensions were taken from here: https://bricks.stackexchange.com/questions/2066/what-are-the-size-of-lego-technic-parts
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