You are searching for a modular ball raceway?

Then you´ve come to the right place!

Building block dimensions: 50,5x50,5x50,5mm

The rollercoster has an diameter of 20mm, so your ball should be a bit smaller than that.

I use an 17mm glass marble, but a bearing ball is also nice.

Recomended print settings: PLA, layer height: 0,3mm (draft), no supports, no brim

More weight is not an disadvantage, because when the ball runs through, the blocks tend to slip, so I turned the base and the walls a bit up.

I would be glad to see your makes and remixes.