Customizable Marble Run
by Arvin, published
This is a derivative of mattjoyce's marble run with pins(from filament) instead of magnets. Designed to attach to a non-magnetic surface...probably plywood.
Print. (I used 0.3 layer height and 3 perimeters)
Drill holes appropriately spaced for the pins.(Angled would be less likely to come out put harder to get the correct angle.)
Find someone that's kid enough to enjoy...