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Original Sphere Spinner 1/2 inch balls
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My new sphere spinner with 1/2 inch ball bearings, and printable in two pieces. Print 2 halves with the flat side down. Place a ball in each pocket, place the 608 center bearing, put the second half on top with the countersunk holes offset from the opposite side, and use (4) 3mm by 10mm long screws on each side to screw it together. Printing in halves is best for multiple reasons. The balls fit in the pockets without stressing the material from pressing in, the bearing can be captive and wont sl
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