Sep 28, 2021
In Getting Started
So I installed this on on Ender 3 (non-Pro) and I seem to be running into jamming issues between tool changes. I already went ahead and replaced the included bowden tubing and swapped them out with Capricorn tubing. While this makes loading it by hand fairly easier, the tips of the filament formed by the custom gcode still have a noticable bulge at the end of them (1.9 mm thick according to my calipers) and this fatness seems to get stuck in the Y splitter, or even earlier on the way out of the dual gear extruder I have on my Ender 3. One way or another, between tool changes one filament ends up colliding with a previous filament in the Y splitter that is supposed to be out of the way. Is there a way to increase the pressure of the gears on the MK2's extruder, or is there a gcode tweak I can make to eliminate the bulge? FWIW, to install the Capricorn tubing I simply got some 4mm compressor tube connectors to connect the 4 tubes coming out of the MK2 (which I snipped down to a couple of inches) to the Capricorn tubing I added. The filament passes through the connector just fine.
Sep 09, 2021
1) Is there any way to have a dual connector extruder that doesn't catch onto the Z axis lead screw? For now I've just rotated the entire extruder 90 degress, but I think that comes with the issue of too much of a bend in the bowden tubes in a couple spots. Or, is there a way to hook 3DChameleon up just a regular single connector? (but I imagine this way, feeding the filament back into the extruder, it would more than likely not line up with the tiny hole and not feed at all. This happens to me all the time when I try and do it myself, even with a diagonally-cut tip...) 2) So no go at all with Cura when it comes to 4 colors? I mean, we're given a Cura profile for the MK2 4 colors, but since Ultimaker printers only have at most 2 exturders, the purge tower plain-out doesn't form right with more than 2 colors. I searched quite a bit to find a solution to this, but unless there's a secret hidden plug-in that fixes this, I couldn't find anything other than Ultimaker employees saying "Sorry bro, we don't need more than 2 colors, so deal". I've always used and liked Cura, and I've been trying to use Prusa instead, but the interface is....soggy garbage compared to Cura. It's tempting to just model my own purge towers and use Cura, but that's obviously extra work. 3) Finally, where exactly do you feed the lines up to when loading up all 4 filaments into the MK2 before the print? Do you put them just past the gears inside the initial 4-way motor, or up to the Y splitter? Can't find any clarification on this. And to add to that, do I need to make sure the MK2 is set to tool 0 before I start a print, or is that handled through the g-code automatically before each print?