I have hard time with Bambu PLA Matte (Desert Tan) filament.
I can do anything, but my first layers are ugly as hell.
I am using 0.2mm nozzle, layer height 0.14mm standard profile.
My settings from the default:
Elephant foot compensation 0
Wall generator: Arachne
Only one wall on first layer: YES
Avoid crossing wall: YES
Infill/Wall overlap: 25%
The result:
Blobs and in same time layers are not connected (please zoom in).
I stopped the printing to check first layer agains the sun:
What the…?
I read somewhere that I should select textured plate in BambuStudio for this type of plate.
I tried.
Even more blobs, maybe a little less layer separation (except the purge tower).
Not good at all.
You would say I should calibrate. I did.
Let’s see, there is some difference in the calibration print after looking on the first layer.
I waited until the calibration ended:
The other layers hid the problem (okay, except for the values 20, 15 —they’re still ugly).
So the calibration not helped a much.
Where should I continue?
Since you seem to have both over- and under-extrusion on the first layer and a blotchy first layer in the calibration patterns while having good adhesion even on the effect sheet: did you dry the filament and did you run through the recommended maintenance?
Since you are in the same time zone as me, assume that the filament has travelled the 7 seas and likely has a significant moisture content.
Thanks for the reply. I tried to dry it at 9 hour @ 55C in the oven. I see only a very minimal improvement:
Then I tried to lower the temp from default 220 to 210, but it was so much worse (I rather hide with my thumb at -20), then to 230. I think it was little better again, little bit less blobs, but layers not attached at all.
I losed all my hope at this point, reverted to stock temp @220, cleaned again the plate:
different angle:
Layers are maybe better bonded together, but still lot of small blobs on the surface.
I have no more idea.
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Ok, wet filament is now unlikely. Still not impossible, but certainly unlikely.
There are a number of items that can be ruled out and a number of other things you can try.
When having issues, it is usually a good idea to run through the recomended maintenance. Rod cleaning, spindle lube, belt tightening and checking the PTFE’s may not resolve the issue, but it prevents misdiagnosis.
Next, it looks like the steadiness of flow is an issue.
Do you print from the AMS? You can try from the rear spool holder to make it easier for the extruder.
You calibrate and print with the .2 nozzle? It may be worth doing a test with the .4 with the Arachne wall generator. If that is OK’ish, try that calibration with the .2. Also, I usually calibrate on the smooth PEI before using those values on the effect sheets. I am not sure if that would truly make a difference, but I thought I should mention it.
You could also check the nozzle for damage/wear by printing a single line circle and measuring for a consistens line width and height. Or try a different nozzle if you have one.
It may also pay to check the extruder gears for wear and residue.
So I am sorry that there are now more things to investigate than before. But it hopefully gives, well, hope.
But before you go through with that:
The first layer of a cali pattern is not neccessarily a good indicator.
Maybe you just want to give your print a shot at half speed?
Do not stop that after the first layer. Let it run through. Subsequent layers can occasionally give additional pointers as to what is wrong.
Do you only print the calibration half way or do you actually calibrate the filament ?
Without calibration you try all day long to get a good print…
Flow ratio, than k-factor, after that see what happens.
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PS: Forgot to add: You can of course check if you have similar issues with a different filament with the same set-up too.
Try classic wall generator…
Thanks for the responses.
Today, I tried:
- A new test where only one layer is printed with a different flow rate.
- Changed filament – same problem.
- I am now not printing from AMS
- Cleaned the nozzle a few times – same problem.
In pictures:
After nozzle cleaning video:
After cleaning:
Since it not helped I tried to change back to 0.4mm nozzle. I got perfect result immediately.
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Hi there,
i have a similiar issue with PLA Matte grey(only matte i have) i did the calibration
and the first set i lost the lower left 2 and the upper right one also. on the second set i lost a couple more, but i can print PLA Basic in multiple colours ok.
I had issues with Adhesion and lost a number of prints
A1 with AMS
Windows/Android user
only a couple of weeks in.
