Simple Spool Holder

Simple Spool Holder with less material consumption. Made for donation spool for any spool switcher or for the printers external spool. Tested with 20cm and 30cm spools. Two 608 bearing needed per Spooler Holder. How to center the ball bearings in the ball_bearing_stormcoat piece:Print the ball_bearing_stormcoat_centering.stl and put the ball_bearing_stormcoat.stl into the deepening, then press the bearing down until it touches the ground of the ball_bearing_stormcoat_centering piece. (see photos