SerraFilo - Ultimaker extruder filament holder

thingiverse

Simple skrew replacement for Ultimaker extruder Instructions This is a replacement for the ultimaker extruder filament holder. Mine had the bad attidute to loosen during long time printing, so I replace it with another one with a lock nut. I test it with some long time printing (2-4 hours) with perfect results. Instructions To build it you need: 1x Print SerraFilo.stl knob 1x 40 mm M3 threaded rod 2x M3 nuts 1x flat washer 1x hexagonal spacer, M3 thread, 12 mm across flats First print the stl file and put the hex spacer in it (it need a little of force, be careful). Then lock the knob with one of the M3 bolt. When you have to mount it on the ultimaker, I measure the distance (like in the picture) with a digital caliper and lock the nut (no extrem force is necessary). Hope can be useful, GC