Summary

This is part 8 of a set of laser-cut marble run pieces designed by Paul Buckley. The full 3D model can be found in Onshape here.

These are designed for a pegboard with 4.8mm peg-holes, arrayed with a horizontal and vertical displacement of 31.9mm. A curf of 0.28mm has been taken into account.

Horizontal piece (ply) thickness: 2.75mm (anything up to 3mm should work)
Vertical piece (acrylic) thickness: 2.8mm (anything up to 3mm should work)

DXFs are attached for direct import for lasercutting.

Example videos are here and here