Everything went fine printing with the first and then the second extruder, but when it switched back to the first extruder it did not lift the second extruder high enough, and the nozzle started fouling the printed model.
This then ripped holes etc through the material printed by the first extruder. Switching to the second extruder resulted in a good print for that layer but after each switch back to the first extruder the second was always too low.
Firmware is the ābetaā 1.15.15. All calibrations etc done prior to printing, and I also printed a solid Benchy out of Luban. I then tried the two colour as described above.
@andyd I received my Dual Extrusion Module two weeks ago and have been trying to calibrate and print projects since (to no avail). I have updated all the firmware, software and been through the full calibration overā¦ and over again. If you end up successfully printing anything, can you share your experience/troubleshooting. I gave up and downgraded back to my single extrusion module.
Iām very sympathetic to your plight, Iāve only been using it for a few days and have also given up - this nozzle issue is a hard stop.
I did successfully print the calibration model, but even that was on the second attempt. The XY calibration only worked when I had black PLA in left, and the breakaway PLA in right as the quick start describes, but even that took 4 prints to get right. Then when you print the squares model, the centre square was printed with the breakaway and the outer squares with the black. And it was awful. I redid the squares after swapping the filaments and it was perfect.
I wanted to print from Luban, but that forces all models to the surface, so you canāt put a colour on top of another (3D Benchy).
I have reverted to the single, but now Iām getting some misalignment on a model that I have printed many, many times (a part I use in my business). Iām worried that the printer has somehow got corrupted, or worse still that the enormous double extruder has damaged my rails when zapping back and forth. I also think it needs to be switched off in between every print, as it seemed to get tied up - I tried to run the manual sensor calibration and it tried to drive the nozzle through the print bed. When I cancelled and tried to run another calibration it just sat there and did nothing.
I want to support SM as the unit is really handy (I use both the laser and 3D commercially), but the double extruder just seems to be not ready for prime time. I had some uses for it, but like you Iām putting everything on hold.
Probably a different issue - mine is related to switching from one to the other, yours just looks like bad adhesion for the first layer? You can go into Calibration and choose to calibrate z heights there, canāt remember what it is called because I havenāt used it since.
OK, I think another post has explained why Iām not getting the lifting:
The filament Iāve been using is a bit rough, and the friction in the tubing from the dry box is obviously preventing the nozzle from returning to the travel position. Iāve discussed more in that thread.
Sorry mate, I finally got it to print using black PLA and the supplied breakaway. You might have to start the whole process from scratch - turn off and turn back on again. If things still donāt work then let it do the calibration prints as bad as they are, accept whatever result it gives, then it should give you access to the calibration menu. You can redo everything from there (including those XY calibration prints)
I got a new firmware version and then it worked a bit better. But it looks like the temperature is wrong. I tried to set it manually but the temperature resets when printing the test model.
This thread is more about issues relating to the second extruder not lifting rather than bed temps - Iād probably search on the forum to see if anyone else has had the same problem. If the bed temp is actually reporting zero then it sounds like it is not connected to the controller in some way, either due to cable damage or just coming unplugged.
Figured out the issue was my dry box feeding through capricorn tubing. The dual extruder does not like ANY friction on the second filament, as this affects the ability of the tool head to lift up and down.
I proved it by watching the print and manually feeding the right extruder - no height issues.
