Refrigerator Marble Run

Here's a fun marble run that magnets to your refrigerator. It can be kind of tricky to get it to work right but that's half the fun!

Here's a youtube short of my print. https://www.youtube.com/shorts/lxbkmWfChb8

Notes:
The rails can be used in a right or left orientation. They can also be cut down to fit whatever your particular layout might require.

Weighted drop has tight tolerances and must be printed at .1mm. Small support included in .stl must be removed. Insert magnets so that polarity pulls the two pieces toward each other. A 16mm marble acts as the counterweight and should just snap in without glue.

Spiral drop requires supports. I've included a .stl (print as support). In Prusa right click the model, add support enforcer, load, choose "print as support" file.

The chain may need lubricant at the beginning. WD40, 3 in 1 oil, or something similar.

Two 608 bearings are required (one each) for the sprockets. Industrial 608s work best because they have less slop in their mov