RepRap: Blog

I have (finally) finished my 1.75mm filament extruder design for RepRap.

I say RepRap - in fact, by simply changing its adapter plate (called base_plate in the design), it should go on virtually any 3D printer.  The standard design fits Mendel (both the standard one and Prusa).   I will shortly do a plate for Huxley too.


It features:

1. Very compact high-torque NEMA 11 motor
2. Active ducted fan cooling for high reliability
3. Wade-style hobbed bolt filament transport
4. Wing-nut drive to spread the torque loading on the plastic gears
5. Push-fit hot-end parts - no thread cutting
6. Easily replaced PTFE liner for the hot end
7. A single M3-threaded rod cut to lengths makes all the fixings
8. Lightweight: 420g (about 60% the weight of this extruder)
9. Compact design (110 mm x 90 mm x 80 mm)

It's all here on the RepRap Wiki.

And here's a video of it printing itself:


RepRap Universal Mini Extruder from Adrian Bowyer on Vimeo.

Labels: 1.75mm filament, belt driven extruder