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Print It! Build It! Roll It!
Use any standard 3D printer to print the four objects offered below - as many times as it takes - to build your dream marble roller coaster.
CUBE
GRIPPER BAR
SQUARE
GRIPPER
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To complete your creation you also need to purchase a package or two of 1/4 inch dowel rods and a package or two of 1/4 inch plastic tubing (you'll have to boil the tubing for 10 minutes and lay it in straight lines to cool and dry, in order to work with it). Both dowel
rods and plastic tubing are available at just about any hardware store.
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Here are links for purchasing ¼ inch dowel pins and ¼ inch plastic tubing:
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1/4 inch wooden dowels:
https://www.homedepot.com/p/General-Tools-1-13-in-x-1-4-in-Fluted-Dowel-Pins-840014/202252099
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Everbilt 1/4 in. O.D. x 1/6 in. I.D. x 25 ft. Polyethylene Tubing-701873 - The Home Depot
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