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.
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.
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.
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.
