Here’s a cool vortex and ramp trick with 3D-printed GraviTrax-compatible marble run pieces.
source
Here’s a cool vortex and ramp trick with 3D-printed GraviTrax-compatible marble run pieces.
source
3D print this World Cup Trophy with Spinning MOVA Gobe Buy the 4.5″ Earth with …
Satisfying loopπ€©π€©