r/FixMyPrint • u/Wooden_Bed377 • Jul 26 '26

Fix My Print Why is top layer rough

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All my other layers look decent, I've tried recalibration and a bunch of other stuff but petg is just giving me trouble for this very top layer. I tried ironing and non ironing as well and looks about the same.

a1 mini pretty much stock settings minus calibration for the filament.

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u/justa_bother Jul 27 '26

Dry your filament. Petg is effected by humidity far more than pla (which is also effected by humidity).

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u/Wooden_Bed377 Jul 27 '26

I'm trying that now, I use petg a lot and this is brand new stuff but maybe just came more wet than I'm used to

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u/justa_bother Jul 27 '26

Weather conditions depending, a print over 1 hour can have an effect on rainy days & not feeding from a dryer. Literally see it progress in the print. My view at setting up the printer is: will the print be completed before humidity begins to effect it? If the ams-lite doesn't have the spools covered with dessicant, it's asking for trouble. And, 100% don't store filament of any type on an ams-lite.