Griffin Extruder for 1.75mm filament

thingiverse

This is the extruder used on the Griffin Delta printer, and one without mounting ears. It allows the use of geared and normal Nema 17 stepper motors (see the instructions for the geared stepper it fits) as well as several bowden options. Features: Uses little plastic Easy to clean, exposed hob One side allows for a feeder tube or bowden While the other side uses a screw on cap, which makes for easy removal of bowden tubes as well as allowing for the use of a 4mm captive nut instead of a pneumatic fitting. This whole assembly can be cut off if not wanted. *To use the nut, you need to break off the inner ring under the screw on cap to make room for the nut. See the Griffin here:http://www.thingiverse.com/thing:259238 Instructions No support is needed, it's already built in. Print at 70% infill with PLA. There are several ribs where the idler bearing sits that need to be broken out. There is also a flat area on the bottom of the threaded plastic that needs to be removed in order for the cap to be threaded on. Threads for the Pneumatic fittings and idler bolt are built in, but often need cleaning up. Assembly is pretty straightforward, it can't go together wrong. 1x 625zz bearing (5x16x5mm) 1x Nema17 gear reduced motor http://store.makerstoolworks.com/extruders-and-parts/geared-nema17-stepper-motor/ 1x m3x20mm bolt (socket head cap) 1x m3 nut 1x m3 washer (flat) 2x m3x10mm bolt (socket head cap) 1x 8mm I.D. hobbed gear: Trinity Labs, Makertoolworks and Ebay all have them. 1x M5x15mm Socket Head Bolt (14mm-16mm is fine) Optional build (for those on a budget) Replace the geared motor and hobbed pulley with these. I really prefer the geared setup though. 1x Nema 17 I recommend Kysan for the torque 1x Ultibots 1.75mm hobbed pulley