Geeetech prusa i3 pro b part for FILAFLEX printing

This part is essential if you want to print FILAFLEX. This will avoid the filament to get stuck between the pulley and the motor gear pinion. It can be printed in PLA or ABS. In order to print it correctly it is highly recommended to print 2 pieces or to set up a minimal layer time of 5-10 seconds. It can be easily fixed to your printer using two little cyanocrylate drops.