Rail set (Marble kit 4.0)

In order to use the pieces from this set, you need the pieces from the first set: https://www.thingiverse.com/thing:6731501

This set solves two interesting elements for the marble kit. First it allows longer straights and curves in one piece, and second it allows you to see part of the path through them.

Warning, these are the most delicate pieces of the kit, as they are very thin tubes of filament, and if removed abruptly, they can break. I recommend pushing from the closest part of the piece to where it is hooked.