Titan Aero Extruder With Probe Mount for Lulzbot Taz 6

thingiverse

The files here are compatible with an E3D Titan Aero 1.75mm or 3.0mm Standard (RH) on a Lulzbot Taz 6 or 5, etc. Ignore the "1.75" in the STL file names; it's just that this version was built for 1.75mm to consolidate filament size. I have also built both 0.50mm and 0.40mm nozzle versions, which work great and are a significant improvement over the stock AO Hex extruder on my Taz 6. If you're reasonably skilled, this is not too hard, but it requires soldering, crimping, and good printing skills. If you don't have those, $250 for a 3.0mm version (without an inductive probe) purchased from Lulzbot or ItWorks3D is a reasonable price for a job that entails considerable time to complete. The Titan Aero was ordered from Filastruder. I also modified my firmware to 1.1.8.62 Marlin from the AO Marlin repository. I can include the version changes for the 1.75 version if someone asks; don't have enough time right now... You will also see that I added a magnetic plate bed from my Taz 5 bed conversion, similar to https://www.thingiverse.com/thing:2836555, except for the corner adapters for the phenolic and steel plates. There are two lower air duct designs; one is for a 12mm NO NPN probe and the other is for an 8mm version. Both work fine, but after trying both, I went with the 12mm version because I like the extra 2mm of space above the bed. The 8mm looks cooler and is lighter. Later, I will post instructions to add the probe to the Taz 6. I only use a single IN4001 diode to allow using 24V with the probe and not blow out the 5V signal input on the Rambo. I used cheap 3mm brass inserts from Uxcell on Amazon; have a tip for my Hakko soldering iron, but you can use a 3mm screw with a hot iron as well. I will post a parts list later. Video: https://www.youtube.com/watch?v=PKN-m4CiRlI. I will also post a video showing it in use and how to modify the T6 for the probe, etc. You risk bricking your Taz if you don't know what you're doing when fiddling with electronics and firmware; take full responsibility for making modifications here. I have crashed the head several times and blown a few Littlefuse 5VDC micro fuses. Not on this project, though. BTW, Bel makes a version of that fuse for about $0.35 each on Mouser. I used PETg here; ABS would also work. Had trouble with the main part of the extruder mount peeling up at the lower left corner. Increased bed temperature 10 degrees to 80C, added a 5-ring attached brim, and hairspray. The lower fan duct and probe mount should have an attached brim to prevent the nozzle from knocking the part loose. You don't need support inside of the lower fan duct and probe mount; the angles will print without it. However, use support on the outside, under the probe holder, etc. The firmware hex file I used for the 1.75mm version on my T6 and the 5 Marlin 1.1.8.62 source files I changed to accommodate the probe and bed leveling are included here. The Z-axis home switch is not used; the Z home is at the middle of the bed. May use the wiper later, but if I do, it won't be more than a couple of light wipes. Don't like the way the stock wipe jams the nozzle into the felt; you can see the extruder mount flexing when it does that. Actually had it loosen my hot end and heat block on the AO Hex hot end before this mod.