Ball Drop Machine
thingiverse
This is a simple ball drop machine. It is designed to be easy to print and very tolerant of printing flaws. It prints in 4 pieces. The gears are attached with metal pegs and a small washer. Everything was designed in openSCAD except for the upright portion of the frame which was done in tinkercad. https://www.youtube.com/watch?v=y_nTN3qEn4w&feature=youtu.be Instructions The pictures are ABS printed with 0.2mm layers. Two 3/32" pins hold the gears in place along with #6 washers to make them spin freely. The marbles are 3/8" ball bearings.
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