Table Top "Roller Coaster"

grabcad

A fully operational tabletop roller coaster features rotating wheels which can be 3D-printed as one piece or separately for the wheels and body. Customizable engraved text adds a personal touch, while the color of both the body and wheels can also be tailored to suit individual tastes. The design accommodates most mug sizes with its 90mm diameter glass or mug seat. I've even printed my model and customized it for demonstration purposes, as illustrated in the accompanying photos.