Designed to be printed with 0.4mm nozzle. The case top is superglued to the case bottom. Do not get any glue on the other parts! I included the blender file in case anyone needs to modify it for different throw, etc. You need to drill a hole in the follower, then connect the follower to the switch points using light music wire. I like to put a Z bend in the wire so that the points are spring-loaded a bit.