These infinite marble loops are our hand-powered, speedy and satisfying, tactile fidget toys that can be spun up with a flick of the wrist!

Easy to operate, they are rated FANTASTIC FUN FOR ALL.

Included in the Action Pack 2:

1. The Mobius Ring (is it two tracks? or one?)
2. Marb-O-Sphere
3. Rose Bloom

Print instructions:

1. Before the full model - Print the test piece to make sure your marbles will fit. Your marble should GENTLY click into the top of the track.

If your marble does not gently click into the test...

2. Scale test piece up by 1-2% if clicking in the marble is hard to click in or if marble will not roll freely in the path . OR IF NO CLICK - Scale down test piece by 1-2% or marble will fly out!

3. Before printing full model adjust the size by the same amount as you did the test piece!!!

Please Note: Glass marbles can be imperfect. Have a few available to check roundness for best speed and smooth action.

PROJECT INCLUDES sized for a standard marble (16mm) , peewee (12mm) and 10mm ball bearings, but can be scaled to any orb with the test piece! We love to use precision steel balls which ZOOM on the Marble Loopers...

Spool it up!!!