I realize that it could be because I’m running CR PETG and not Bambu Lab PETG and might be overcooking the print speed, but I am struggling to get a good print result (could be print speed),.I’d really appreciate any advice as I’m new to PETG. Thanks in advance!
See the following image, the right bracket has plastic missing on the build plate (and a fairly rough side to it) and the left one has a rough top and side, all defects are on the same side (rear right) of the printer:
When the original PETG Basic came out we all struggled with the bad settings.
Since then, my go to settings are the “Generic PETG” with print speeds <80mm/s, accelerations = 25% of defaults, non-crossing infill (honeycomb, gyroid) and surfaces (monotonic, concentric). I also enable wipe on retract.
There’s more, but these are (my) basics.
I am currently using CR PETG and here are the filament setting I use:
0.4mm Nozzle
Bed 70C textured PEI plate
Nozzle 255c first layer, 250C other layers
Filament Ramming Length 10mm
Filament Print Volume 45mm^3
Initial Layer 50 mm/s
Initial Layer infill 105mm/s
Outer Wall 200 mm/s Inner Wall 300 mm/s Sparse infill 270 mm/s Internal Solid Infill 250 mm/s
Top Surface 200mm Flow ratio: 0.95 Max volumetric speed 12 mm3/sec K-value: 0.02
You may want to run your own filament calibration for pressure advance and flow ratio but this should be a good starting point.
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