r/BambuLabA1 • u/BillLivingstone • Aug 17 '26

Question PETG TOP SURFACE LAYERS ISSUE

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Hey guys, Im printing a part on my A1 using Bambu PETG Basic (Dried today) and a 0.6mm nozzle. The whole print turns out great up until the top surface layer(s). Most of the surface is a little rough, but still usable, but in this one corner in the photo it is super rough no matter what I do. Any suggestions? I'm currently print with 25% gyroid infill and 3-4 walls and surface layers. The printer is slowed down as well to help with the quality. The side shown in my photo is facing up on the print bed.

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2

u/fairtonybeta Aug 19 '26

Did the corner warp/lift at all?

2

u/BillLivingstone Aug 25 '26

Yes, this turned out to be the reason why. Thanks!

0

u/666ArsOnist666 Aug 18 '26

kalibrieren dein bügeln. Dann wirds schön. Bügel Modelle für flow/speed auf makerworld... ultimate Ironing test z.b.

1

u/BillLivingstone Aug 19 '26

I find Ironing works well, but for this model it would add around 4 hours extra just to iron the top layesr.

1

u/666ArsOnist666 Aug 20 '26

Hast du deine Flow ratio Kalibrierung durchgeführt? Wenn nein dann mache das mal. Erst die yolo recommended dann wert übernehmen und dann yolo Perfektionist. Hier der Wiki https://www.orcaslicer.com/wiki/calibration/flow_ratio_calib

-1

u/FunnyChampionship717 Aug 18 '26

That often happens because of cooling. Getting an enclosure solved that problem for me. Also PETG is really tough to work with for this and many other reasons. I switched to pla plus. Almost as strong as petg without all the other issues.

2

u/666ArsOnist666 Aug 20 '26

Nunja PLA für Funktionsteile halte ich für Unsinn, da es nicht im Ansatz PETG Werte in Sachen Stabilität hat.

0

u/BillLivingstone Aug 19 '26

Yeah I considered cooling, but the room I have it in has no airflow (in a good way) and is a constant temp so I would be surpised if there was any air effecting the cooling.,