About this 3D model

Hi, this is spool holder that fits anywhere on the wooden bar of 3DPN shelves. It is just one piece with 2 tilt stops (printed in place). No support, brim or raft is needed. Features (also see the last picture): 1/ Provides 2 contact points for the spool to avoid its swing during print. 2/ Allows spool to tilt. The tilt can be kept by tilt stop (1st for wider spools and 2nd for narrower spools). I think it may be useful when the printer and its extruder is away from the wall. 3/ When not in use you can slide it on the 2nd slot to the vertical position and leave it aside. 4/ There are some inside perimeters in the part that help the strength to be more effective without changing external shape. Note: The tilt stops will probably be "welded" after being removed from the heatbed, but they can be separeted from the main part using screwdriver.