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    WallTracks Base Set - A wall mounted marble roller coaster

    Inspired by GraviTrax but not compatible (the tracks are larger).

    I use 1/2" steel balls (sling shot ammo), but should work fine with standard-sized marbles too if you get the speeds right (marbles are much lighter than steel balls, so you have to go much slower or they'll fly off the tracks).

    Balls; https://www.amazon.com/PGN-Slingshot-Caliber-Precision-Bearing/dp/B07ND39VD5/

    Example track: https://youtu.be/Y5a8fHBKsM8

    The tracks snap into the base/connector/mount part but it is VERY tight, so you might want to scale it up to 103% (this is what I use) or larger (test a few out before you mass print them) depending on how tight your printer is and the rigidity of your printing material.

    Expansion parts added sometimes, everything is in this collection:
    https://www.thingiverse.com/tylerecouture/collections/walltracks-wall-mounted-marble-coaster

    I use rigid body simulations in Blender to create the proper curvatures (example of my failing spiral and a fix): https://youtu.be/jwW6qyEw3l4

    Here are the parts included in this base set:

    • Base (once you get the right size, I use 103% scaling, the tracks should snap in nicely. If you want to mount them a different way (magnets? screws?) let me know and I can upload some alternate versions) - Bi-directional
    • Straight - Bi-directional
    • Straight - Long (for larger printers, I can print this on my Ultimaker 2+) - Bi-directional
    • Drop Tiny - Bi-directional
    • Drop Very Small (I also use this in reverse to slow the balls down when needed) - Bi-directional
    • Drop Small (This is what I use before the loop de loop) - Bi-directional - removed, use the improved version: https://www.thingiverse.com/thing:4781593
    • 2Hump - Bi-directional
    • 2Dip - Bi-directional
    • Sidewind - mirror for the opposite direction
    • Loop de loop - mirror for the opposite direction - removed, use the improved version: https://www.thingiverse.com/thing:4781593
    • 180 (switchback, this is a poor design and can only handle really low speeds, consider using the improved version here: https://www.thingiverse.com/thing:4773179)
    • Double Spiral - REMOVED (I was having problems with the original, so I've redesigned it here: https://www.thingiverse.com/thing:4772211) - mirror for the opposite direction

    Additional parts are being added to this collection: https://www.thingiverse.com/tylerecouture/collections/walltracks-wall-mounted-marble-coaster