Math Spinner Enhanced (fast print, no support)
cults3d
This is my remix for this great educational toy. I remodeled it to have negative and draft characters, so no need for supports. Also no need for part cleaning, and the central tube is a standard 1" PVC tube. UPDATE: I've included my version #2 for 32mm water PVC tube. This is the white and pink smaller assembly showed in the pics. Also prints faster (~3,5h). UPDATE: Take care, version 1 is for 25mm tube, not 25.4mm. The modeled internal diameter of the wheels are 25.6mm . So if you use the 1" tube, please scale the part in X and Y to increase the gap, otherwise it won't turn. Version 2 is for 32mm tube, wheel's hole is 32.6mm UPDATE: Someone asked for a '=' wheel with '> <' signs so I did it for the 32mm version. STL available now.
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