Handle for Ultimaker Extruder-gear

thingiverse

I did not understand what the hole of the extruder gear is for, so I tought that it is a hole for a handle or something like that. I found out what it is for, but I tought that a handle would still be nice. I am not really good at 3D-Modelling, but I did my best and created a handle for the Ultimaker Extruder-gear. It works very well and I am really happy with the result, even tough it doesn't make sense to have a handle, to be honest. But it looks nice :) All you need is a printer with a good resolution and one washer. I printed it on my new Ultimaker with the following settings: 40mm/s speed 0.1 mm layer height wall thickness 0.35 mm (using a 4mm-nozzle) fill-density 20% retraction: on I have also included a GCode-file for the very lazy ones ;) The parts came out of the printer relatively properly, I only had to remove some small pieces where the retraction was a little bit to slow. The assembling is very easy, notice that it is normal that you have to put some serious force on the handle to stick the two printed parts together. the smaller piece has to be sticked from the back of the gear and the bigger piece needs to be pressed on it from the front-side of the gear. The side with the bigger hole needs to touch the gear, the bigger opening has to point at you. Before you remount the gear to the Ultimaker, put a second washer between the feeder and the gear- the handle touches one screw of the extruder if you do not. This could case problems while extruding. If you have mounted the handle once, it sticks very well, please notice that it MIGHT be possible that the handle breaks if you remove it - it is made to stay on it's place even if you use some serious force while you turn the gear... I tested it on the original Ultimaker-gear but I think that most of the replacements should work aswell. I included the original skp-files, a fixed stl-file and the GCode I printed with. This is my very first thing I upload on Thingiverse, please feel free to test it out and improve it if you see the need of it. Thanks for reading, downloading and commenting :)