Spiral ball run executive toy gadget
cults3d
Spiral toy with encased ball (simple but addictive). This model requires an 11mm or 7/16" ball bearing (not included) https://www.amazon.co.uk/11mm-Chrome-Steel-Ball-Bearings/dp/B002SS16QY https://www.amazon.com/Inch-Chrome-Steel-Ball-Bearings/dp/B01AX1MSKU Turn it over and watch the ball run round and round. This model is specially designed to have no supports and enable you to insert the ball half way through printing so it is built into the model. Print with orientation shown on photo (otherwise it will be difficult to add the ball).
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