Retraction of .8 is a actually alot higher than most of my direct drive machines. I run most of my Klipper direct drive machines between .3 and .5 without issue. Also be aware that anything over 1mm may cause clogs in the print head. I dont understand why any filament company would put a retraction distance on their product considering bowden set ups need around 5-7mm and direct drive use .3 to 1mm. This is not the reason for the oozing. They just need to change the gcode so the nozzle doesnt heat till AFTER doing the last bed leveling lidar scan.
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Try and enable a prime tower
I know it sucks that the print time will increase but the combination of a nozel wipe and a prime tower should get rid of any boogers on the nozel/hotend
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Its not a problem during print. Like i said its just the period of time after bed leveling the lidar scans the bed then prints purge lines. When the nozzle is building bed mesh it is not heated. When it starts scanning the bed the nozzle starts to heat. Not an issue with a small print but if its a large print the nozzle starts oozing before it finishes the scan.
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Very much the case!
I know that I’ve had zero issues after I made the changes to the material profiles.
I’ve also seen an improvement in every aspect of the quality of the prints as well.
I think they could implement the change you’re talking about and only add maybe 15 seconds of preprint calibration time. That heater gets to temp very quickly!
Have you tried starting a print without calibration?
Might need to for those higher temp filaments until Bambu comes up with a specific calibration code for those materials
I dont think it matters. You can turn off bed level and flow calibration but it still scans the bed before drawing purge lines.
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Have you reached out to Bambu support ?
I would suggest a modified bed level gcode where the nozzle temp drops to 50% of the target temp when scanning the bed
I don’t think modifying the start gcode would help as I’m pretty sure the calibration and bed leveling sequence is in the firmware settings so Bambu Lab will need to sort that one out
Got the same problem with the droplets / oozing looks like a little bit too hot and/or too less retraction. Only PLA testet, X1C, Bambu filament and 3d seller Pla+
Hi,
I have the same problem with eSun PETG.
The first print with generic PETG using the engineering plate was a big mess.
I’ve tried this profile, it’s better now
https://www.printables.com/model/383301-bambu-labs-x1-c-esun-petg-profile
I’ll try lowering the T°
looks like this issue was addressed in the most recent firmware. It is not longer an issue.