I have various types and sizes of glasses that need to be safely arranged inside a cabinet. I found some rails but this one is modular and offer the possibility of better allignement of the modules. The best print orientation is upward (xx_vert items), without supports or rafts, in PLA. I opted for 3 walls and 5% infill. The sample can be printed also upward, with 2 walls, 0% infill and 0 top walls. Each module is 12cm long and they are marked F for front, M for middle and S for back. The middle module can be printed in more than 1 piece, according to the wanted lenght. The parts of the right or left rail can be separated in the slicer and can be also scaled. In case of scaling, check the screw holes that are made for 3.5mm diameter screws.