3mm directdrive extruder - HD -Bowden - special mounting or flat

thingiverse

This was an experiment that I've since abandoned in favor of something else. You're still welcome to try it out, modify it as you see fit, or use it however suits your needs. Here's what this thing looks like: Direct drive bowden extruder: Uses 3mm filament Bowden mount 3mm plywood mount at the back on a sloped brace Fits 608 bearing (the common kind) Will need a smoothrod piece that's about 12-13mm by 8mm to attach the bearing Also fits a NEMA 17 stepper motor This is where you'll need to add a hobbed fitting for your 3mm filament, since I'm using a NEMA 17 motor here. These are the parts you'll need: * Six bolts that are 3mm and 18-20mm long, along with four nuts of the same size * One bolt that's also 3mm but this time 30-40mm long * One washer that's 3mm * And one tough little spring