Hand rotating marble run

Hand rotating marble run

Place one or more marbles in the track. 

Then lift the housing up and down and the marbles move around the track!

For marbles up to 14 mm

Consists of the inner and outer track and a 3d printed 14 mm marble!

Print settings:
Filling: 15
Support: No
Layer height: 0,2mm
Material: PETG,PLA