During the first print, the filament doesn't change
Good morning,
i had a long weekend with the MMU2S behind me, so far it seems to work, BUT when i made a test print it doesn't change the filament.
I made a print with 2 colors, in the PrusaSlicer also the correct colors (Filament1 and Filament2) selected, the preview is also correct. Apparently after the first color the printer also cleans the nozzle but then he doesn't change it.
I have attached the created GCODE, maybe you can see more there. used GCODE
One thing I did, since I was still testing, I loaded the filament right to the nozzle and then started printing, was that perhaps the PRoblem that I didn't unload the filming before printing?
I'm a little perplexed right now, because everything I could check is seemingly correct
Thank you
Greetings Alex
RE: During the first print, the filament doesn't change
Hi Alex,
Without seeing what your actually doing it is not easy to diagnose so I may cover what I call "well Derr" things but it will give you something to compare with.
I use tinkercad (dont judge me) so I will go from that. Most of the software you use will be the same or very similar.
1. after designing your model click on the part you wish to export and then export as an STL that part of your model. Save as to a target directory
2. Click on the other part (for a two colour model) and expert that as a STL to the same directory. It makes it easier if you name them something you can work on.
3. open Prusaslicer make sure it is set to the MMU (you will see a purge block on the pallett) if not change it. Click import STL. In your directory you will see the two files you just created highlight them both and import them together. It will prompt you to ask them if its a project or something. Answer yes. (the first one I did I answered no and it did not change filament)
4. Click on expert and you will see the filament menu make sure that the inputs line up to what you want. Edit them if you like.
5. Slice the project and then save to file. use the same directory you had open before.
6. Transfer this to the SD card insert into the printer
7. Load the filament into the MMU and then load the first filament to the nozzle.
8 print from SD
If you are doing these steps and it is still not working, it is not your method.
Enjoy the print
RE: During the first print, the filament doesn't change
@herbiedc3
Hello,
the solution is much easier, someone in the german forum had the ingenious solution.
I printed with Octoprint, in the latest version of Octoprint you have to set how many colors you want to print and how many extruders. Leave it all on default, Octoprint will filter out the filament change commands and discard them. That was the whole problem, Octoprint configured correctly and it runs.
Thanks for your effort!
Greetings Alex
RE: During the first print, the filament doesn't change
@alexander-k41
Hi, my friend, I spent the last 4 days fighting with this ISSUE... I just reconfigured printer profile in OCTOPRINT and it's finally printing!!!!!
MK3S + MMU2S (@BMG + MOSQUITO), MINI, ANET A8
RE: During the first print, the filament doesn't change
OMG, thanks so much for posting this. I have not used my printer for several months, but needed some urgent prints. As per usual, I updated all firmware+Octoprint before starting. The only way I could get a print working before reading this post was to load to nozzle first.
As it turns out, this information is in the Octoprint release notes here: https://octoprint.org/blog/2019/10/22/new-release-1.3.12/
I am going to re-post this info to the forum with a more descriptive title for others to find.