0.2mm Nozzle Issues

Bambu Lab A1 Series Bambu Lab A1 mini
1

I made a Lithophane and thought I would try out the 0.2mm nozzle I got a while ago. I first tried a Textured PEI plate, but the first layer was really bad, with balls of filament and empty spots. I cancelled that print and changed to the Cool Plate SuperTack. Re-sliced using the different plate and even though the first layer looked pretty bad, it didn’t have balls of filament showing up so I let it complete.

When I removed the print, it left some of the first layer behind, but it also scratched the plate, badly. The Textured PEI plate did not get scratched, even though I let it get into the 3rd layer before cancelling. See the picture of the CoolTack plate after I removed as much filament as possible by printing a thin cube using my 0.6mm nozzle.

2024-12-30 10.45.23
2024-12-30 10.45.231920×3410 391 KB

I am now wondering if I should have re-calibrated after changing nozzles. Any ideas why it did not scratch the Textured plate but did scratch the CoolTack plate?

As an aside, I had created the Lithophane for the 0.2 nozzle, and then printed 2 copies, one with 0.4mm nozzle and one with 0.2mm nozzle. While the print made with the 0.2mm nozzle was slightly sharper, it certainly was not worth the more then 2x print time.

2

I should probably add that I did change the nozzle type in my A1 mini and I was using Bambu PLA Basic filament with the 0.10mm Standard profile.

3

Do you have any errors levelling the bed?
You might need to do a 1st boot calibration.

Go into the printer menu >> maintenance >> auto bed calibration
If you still have issues consider a bed tramming

4

You should do Bed Leveling calibration any time you change plates or nozzles. It’s kind of annoying TBH when I switch between Engineering and SuperTack.

The SuperTack plate is slightly thicker than the Textured PEI. As for nozzles, even if dimensions are fairly standard regardless of nozzle diameter, you’d be surprised how much variation there is when a nozzle gets bent (oops!)

5

I do the bed-leveling before nearly every print, and I am sure that I did that for these prints. Or are you talking about a different bed-leveling calibration?

6

You can calibrate the bed leveling in Settings-Maintenance-Calibration.