Weird solid fill surface inconsistency
Anyone have any ideas what is causing such a rough surface? It seems to clean up by the end of the print, but sometimes I hear a grinding noise which I think is from the nozzle hitting the rough surface.
It is polylite ABS, which does not have an official profile. I am printing at 255C, 0.2mm balanced profiles. I have completley dried the filament, done PA testing, and I even did a cold pull because I thought it was a partial clog.
I would also note that I have had extrusion issues before with other filaments, where the first layer laid down has weird rib patterns perpendicular to the direction of extrusion, almost like the extruder is skipping but I don't hear that. This issue also resolves itself by the final top layer, and is only visible when flipping parts over.
RE: Weird solid fill surface inconsistency
The nozzle is too close to the print bed. Are the nozzle thumbscrews tight? Also check if the nozzle has any debris stuck to it. This can cause an inconsistent bed mesh.
RE: Weird solid fill surface inconsistency
Providing @hyiger suggestions don't remedy the problem, I'd then do an extrusion multiplier test cube and see if that reveals anything.
RE:
@gb160 makes a good point. Could be over extruding as well. Whenever I use filament brand X for the first time I spend a day running all of the tests to build a proper profile. I do that even if PrusaSlicer has one already builtin. In fact, I do that for Prusament as well.
Give an example, the PrusaSlicer profile for Prusament ASA has 0.18% for XY shrinkage. However with a 0.4mm Diamondback I measure 0.59%. Doesn't seem like much but then this translates to 1.03mm on a 250mm part. Means screw holes won't line up etc if I use the default profile. If you are printing a Benchy or a desk tray then it doesn't matter.
RE: Weird solid fill surface inconsistency
Thanks for the help all, it did turn out to be over extruding, I ended up turning it down from 100% to 93%. I ended up using the orcaslicer calibration tools. Please Prusa include calibration tools in PS 3.0 the filament library is great but it will never cover every filament.