MK8 Flex Extruder

myminifactory

I've seen a bunch of extruder mods for flex Filament, some probably better. But I wanted to design my own and make it an exact swap out for my stock one. Honestly, it's almost the same basic design with just a few tweaks to get flex filament to feed better and not have a place to curl up or work out of the extruder. Also, I didn't want to have to get more screws and such. • direct replacement for Max Micron (and most other Prusa i3 clones) • No extra screws or springs needed, use the ones off the stock setup. • Better feed into the extruder gear with a longer directed tube in arm • No place for flex filament to worm its way out of the extruder like it does at times with stock unit. Notes - I highly recommend using concentric supports if you print with either part flat on their side. About 18% support coverage works well. Use at least three nozzle widths for shell and at least one millimeter top/bottom layering. Fifteen to twenty percent infill works fine as long as the outer shell is thick enough. Add the alternating shell with infill if you have it in your slicer. When using ExtruderV4_1, please be aware that you can't pull hot filament out as the filament path is very tight with that piece. You need to back out the filament three to five millimeters to release from the nozzle and then let cool before pulling through or hot plastic may stick to the extruder's throat and block the next filament from being able to load.