Dual Printhead

youmagine

Wanted to fortify my second extruder with a more substantial foundation, so I adjusted the one provided in the kit, which surprisingly loosened up the entire printhead. While printing pressure moved the nozzle down in the hotend. To make it work with my UM1, I had to be cautious during the first test, navigating through 1001 tensioners and fanducts around. Be sure to check out the pictures for a clearer understanding of how it swivels. Ideally, the first nozzle wouldn't move at all while adjusting the second one, but that's a feature for the next design, assuming someone has access to a mill for creating a new aluminum part. Adjusting the height of the second nozzle also changes its X and Y offset slightly. Therefore, level both nozzles, then check and set the X and Y offset. After raising and lowering the second nozzle, level it again for single use; this will return the offset to its normal value. When printing materials, my first attempt was with standard PLA, but it melted. My second try with ABS could work without a heated bed or chamber, except it started delaminating higher up in the print. On my third try, I used PLA90, which worked, albeit too flexible for my taste. For the past two weeks, I've been running a combination of PLA90 for the hot part and standard PLA for the colder upper part. However, you need to get your dual setup going before printing this design. To make adjustments easier, I repurposed cones and knurled nuts from other designs and created some rings that fit over standard M3 nuts. Any comments or questions are welcome.