Pitan (as in printed Titan :-) Geared Extruder

thingiverse

The Titan Geared Extruder 22 January 2020 This has become the most popular among easy to print, lightweight geared extruders on Thingiverse. Both my extruders go strong after close to three years of use and counting. I have printed hundreds of hours with them. I use cheap MK8 drive gears and they work well enough. I imagine something like these sold by E3D work with less pressure on the idler bearing due to sharper teeth. Spare 625zz bearings are a lot cheaper though. Printing: - Supports are needed only for the Idler Lever - I've printed everything with a 0.4mm nozzle, in PLA (including gears which had lasted for hundreds of hours and counting). - Print the small gear at 0.4mm extrusion width and three perimeters. - Print gears and filament guide at 80% infill, 150u layer height and everything else at 250u, 50% infill. Assembly: - Pictures show the previous versions but should make the assembly clear. - The small gear goes in teeth side first. It is tight and it needs to be forced on the motor axle down to about one millimeter from the bottom. - Filament Guide goes in one way only, it has a notch on the tip that has to face up - You need to file flat a bit of the M5 bolt thread, so the drive gear grub screw could hold - Fit the M5 washer between the large gear and the first bearing. - The Idler Lever bolt can also be fitted from the other side. Few things to have in mind: - I've used a bit of grease on the gears and under the M5 nut. - Tighten the M5 nut and drive gear screw last. Do the M5 nut tight then the grub screw and then loosen the M5 nut until you can move the gears easily by hand. - The M5 nut may get tight by itself over time. Make a mark on the bolt to see if it moves - Chamfer a bit the inside of the PTFE tube and push it all the way in the filament guide. There is no need for a lot of idler tension. If your MK8 skips you most likely trying to squeeze too much plastic for that particular speed/temperature/nozzle combo. On my Kossel I'm using the two 2020 45deg mounts on X and Y towers. In the files you will also find a universal base and one straight mount Parts with "Logo" in the title have the Making'Bug logo on them Kudos go to E3D for the Titan and to AxMod3DPrint for his Drakon Extruder