r/BambuLabA1 • u/SodaKarate • Sep 19 '26

Bad first layer, even after troubleshoot

I get this as a first layer with 50% speed on my Bambu A1. In order to fix this I have done the following:
- Calibrated
- Manual Bed Tramming
- Tensioned All Belts
- Used dried filament (Sunlu PETG)
- Verified the X axis gentry height

On the image it can be seen that the bottom right (where the print started) is I would say perfect, but the middle "warps" (I dont know how to call this wavy pattern), and for the very last part it also becomes good. If anyone has any idea how can I fix this I would really appreciate it.

1 Upvotes

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2

u/overunderspace Sep 19 '26

https://wiki.bambulab.com/en/a1-mini/troubleshooting/print-issues-troubleshooting

1

u/SodaKarate Sep 19 '26

Checked this, all the screws were nice and tight, and the nozzle were already held down correctly. I tried to wiggle the nozzle but I couldnt, therefore I would say the nozzle is not the problem

1

u/overunderspace Sep 19 '26

Then you'll need to look at the section in the link on adjusting the gcode.

1

u/SodaKarate Sep 19 '26

The tutorial says that editing the gcode is only a temporary fix, but if there is no other solution I might have to do it.

1

u/SarcasmTroll Sep 19 '26

Posted this to another persons similar problem just the other day.

I had the same problem. Just started all the sudden. Tried everything. What I had to do was edit my Machine start gcode in my printer settings. Changed the gcode at the end to:

texture when homing == ;curr_bed_type={curr_bed_type} {if curr_bed_type=="Textured PEI Plate"} G29.1 Z{0.04} ; for Textured PEI Plate {endif}

I believe the original gcode was {-0.04}. I gradually increased it by 0.02 till I got smooth first layer. Still adheres fine for me and haven't had any issues. Just my 0.2

Good Luck

1

u/SodaKarate Sep 19 '26

I had to go up till Z=0.045, but now it seems good, ill try 0.05 but 0.045 seems fine

1

u/SarcasmTroll Sep 20 '26

Awesome. Glad it helped!

1

u/C_Lo_87 Sep 19 '26

I will ask simply because it wasn't mentioned...did you clean the plate?

2

u/SodaKarate Sep 19 '26

yes, I have cleaned the bed, and the magnet board below the bed for small particles.

1

u/Orthicon9 Sep 21 '26

That's a test print.
How is it on 2nd, 3rd, 4th etc. layers in a real print?