DevilDesign black PETG - crash detected 4 times in a row
Hello
I brought with my Prusa Mk3s 3 PETG filaments from DevilDesign: red, white and black.
Yesterday I printed my first black object and I tried 4 times and every time the printer detected a crash and stopped.
Red and white are working well. Down are 2 images, one for black print and one for red print.
Black has a lot of imperfections, I guess this is a DevilDesign product problem.
Is there something I should know about this black fillament or this is clearly a defect fillament?
Thank you
Best Answer by --:
Adjust Z-Offset (Live-Z Adjust) to raise the nozzle height. Layer one needs to be 0.200 mm thick. Being off by 50 um will cause ripples like you are seeing.
Prusa Slicer has a default filament diameter set to 1.75 mm. If the filament is thicker than 1.75 mm, then adjust the diameter setting accordingly.
Are you printing in an enclosure?
RE: DevilDesign black PETG - crash detected 4 times in a row
Honestly, it looks like over-extrusion on both red and black, with a bit of bed contamination.
The ripples, if sufficiently high, can cause a crash. So the two might be related. But on a new printer, especially if a kit, can also be bearing friction.
RE: DevilDesign black PETG - crash detected 4 times in a row
I bought the printer preassembled.
Is a very big difference between the over-extrusion of the red and the black. Red contains almost no over-extrusion.
On red the printer just started the infill and ripples are no longer visible(as in the new image), black never got to the infill.
This heappens on the same printer and the same type of material from the same producer. I seems that the black PETG has diffrent properties.
Can I do something about the over-extrusion? A few days ago I dismantled the extruder because the fillament was blocked inside, maybe I did something wrong then.
RE: DevilDesign black PETG - crash detected 4 times in a row
Have you measured the filament diameters?
As for disassembly. It's pretty common for the user to not use the proscribed nozzle removal procedure and cause no end of problems. Did you follow E3D's V6 nozzle replacement procedure to the letter?
RE: DevilDesign black PETG - crash detected 4 times in a row
I use 1.75mm fillament but I donn't have a very precise tool for measure. They seem to be about the same in size, but black is a bit smaller in diameter.
I followed the procedure from here to unclot my hotend: https://help.prusa3d.com/article/WWVRzOY1dX-clogged-hotend#_ga=2.37577250.324695261.1562526388-650288018.1559328674
I had to remove the PFTE tube.
My questions would be: what can I do about the over extrusion and the waves(or should I do something)?. The over extrusion and waves appear only on the first layers. Now the object is almost done in the color red and it looks perfect.
I tried black four times and it failed, I tried red a single time and it made it. As I see it this must be a fillament problem.
RE: DevilDesign black PETG - crash detected 4 times in a row
Adjust Z-Offset (Live-Z Adjust) to raise the nozzle height. Layer one needs to be 0.200 mm thick. Being off by 50 um will cause ripples like you are seeing.
Prusa Slicer has a default filament diameter set to 1.75 mm. If the filament is thicker than 1.75 mm, then adjust the diameter setting accordingly.
Are you printing in an enclosure?