I have around 400 hours on my x1c but I have not done many multi-color prints yet. I have been trying to use eSUN Bone white pla and Sunlu matte black pla for a ghost model and this is the result I am getting.
I has the same results on a different model using the same filament. Once black is used the color turns to grey. I do not have grey filament loaded in the AMS. How can I troubleshoot or fix this?
You need to adjust the purge volume of the black filament. Going from a dark colour to a light colour requires a lot of purging. Click on the “Flushing Volumes” button in Bumbu Studio, it’s above the Filament settings.
Testing now, that definitely seems to be the issue, I’ll post back the results, thank for responding!
Here is what I changed
The default purge settings were:
So from Black to white has a purge value of 346 but from white to black, 515.
I then selected Auto-Calc and this is the result
I then cut the model so it would begin printing the trouble area ASAP.
While that is printing I can’t help but think this is an area for improvement. A camera/sensor detect when color bleed is happening and adjust/warn.
I’m hoping auto does well so I don’t have to adjust - test print - adjust - test print etc.
That is a neat idea but I “think” that the flush volumes are set by the slicer in gcode and are not a dynamic variable the machine can currently change. Good idea for a future improvement.
The issue has been resolved. I selected the flushing options and selected auto-calc. In my few prints since all of the colors have purged correctly, so it appears that auto-calc is working well.
I think for ALL multi-color prints you must go into this setting and select auto otherwise the default is not sufficient.
Man this should be a PSA. Printed my first lengthy multicolor last night… 7+ hours. Same issue,
Question. When you use non Bambu pla does it still calculate the values accurately when you manually select colors?
