Modified gcode from PLA to PETG: Warping-Problem
Hello everybody,
I tried to print PETG with some test sample. Unfortunately there are only PLA-samples preinstalled on SD-Card. So I copied the file and modified following values by text editor (I'm using atom):
First Layer bed temp: 60 -> 70
First Layer temp: 215 -> 245
Bed temp: 60 -> 70
Temp: 210 -> 240
Unfortunately PETG is being warped (around 5th layer) before the print fails because nozzle ran into lifted edge and the object loose contact to the bed (the textured one which should be perfect for PETG).
I just want to be sure: This is not a adhesion problem, am I right?
Could it be because just increasing the temp-values doesn't work? Maybe I have to modify the ventilator settings too. With this topic I want to learn, how to properly change a gcode from PLA to PETG (or even ABS).
I used atom (text editor) because I cannot open the gcode file properly with prusa slicer.
Best regards
Floh
PS: Are there PETG version of Benchy Ship for download? My kids want them. 😉
RE: Modified gcode from PLA to PETG: Warping-Problem
Hi Floh,
PETG normally prints more slowly than PLA
PETG MAX volumetric flow = 8 mm cube per second and slower Part fan after third layer (about 50%)
PLA MAX volumetric flow = 12 mm cube per second Fast Part Fan after first layer (100%)
so perhaps slowing the print speed (50%) and reducing fan to 128 (50%) on the LCD, will help?
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Modified gcode from PLA to PETG: Warping-Problem
What Joan said - plus, there are sample STL files on the card. Load one of them into Prusa Slicer, select the Prusament or even generic PETG filament profile, slice and print. A PLA profile will most likely fail miserably. Too many subtle changes beyond temperature.
RE: Modified gcode from PLA to PETG: Warping-Problem
Hello, thank you for your reply.
Now, if you mention it, yes I noticed that printing PETG (from other project) its slower than printing PLA. And I forgot about cooling-parameters. So no wonder my attempts failed.
tim-m30: On the card, which was shipped with Prusa printer, there are only gcode-files, but no STL-Files. Am I missing somewhat?
Best regards
Floh
RE: Modified gcode from PLA to PETG: Warping-Problem
@floh
Should have been a folder with stl files ... at least they came with my Mk3: most - and more - are available here:
RE: Modified gcode from PLA to PETG: Warping-Problem
@floh
Hi Floh,
If you loaded the Prusa device drivers on a windows PC you should find the files as shown bwlow
Click on image to expand
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Modified gcode from PLA to PETG: Warping-Problem
Ah I see. I'm using macOS so no such files.
I found it there:
https://www.prusaprinters.org/social/16-prusa-research/collections
Thankx!