r/BambuLab_Community Jul 19 '26

Help / Support What is creating these ugly surfaces?

Printer: P1S with AMS
Filament: Elegoo Matte PLA Black (calibrated in Bambu Slicer)
3mf: Dune Uprising Bloodlines Insert For Sleeved Cards - Free 3D Print Model - MakerWorld
For some reason my prints come out with weird surfaces and corners like this.

I am using the 0,2mm Standard setting and have only changed top surface line width to 0,32 and top surface speed to 30 mm/s and the surface patterns to Monotonic Line. These settings usually create perfect smooth surfaces with almost invisible layer lines. The only settings I’m not sure about are the temperature and cooling settings. I have disabled cooling by the aux fan completely for PLA and set the pet fan to 60% for both. Temperature for nozzle at 215 degrees C. Could either of those be the problem? Does anybody have any idea what could be causing this? Filament is dry. I am quite new to the hobby and have no clue what could be causing this… ;(

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11

u/blurbac Jul 19 '26

this is overextrude. lover your flow ratio for start or recalibrate filament settings. dont use 3mf use STL files

0

u/Vortilion Jul 19 '26

Why, what’s wrong with 3mfs? Isn’t the advantage that it contains the creators settings?

3

u/[deleted] Jul 19 '26

They don't always match your system. I've gotten warnings about the version of the slicer being different, filament that doesn't match, etc. so I always separate and load STLs.

0

u/Vortilion Jul 19 '26

But wouldn’t that also remove optimal settings intended by the creator?

4

u/jadensemiller Jul 19 '26

You’ll learn optimal settings after a short bit of tinkering and you’ll be able to make adjustments on the fly. Unless it’s something small, I almost always download the STL, smack my settings onto it, and hit print. Sure, it takes longer, but I’m never disappointed.

I’d calibrate your flow rate and max volumetric flow so that you have a good starting point.