Ideal print settings for Prusament PETG V0
I purchased a spool of self-extinguishing Prusament PETG V0 and I had a terrible time with it. While using the PrusaSlicer preset for my CoreOne+ and the Prusament PETG V0 material, the prints had really poor adhesion leading to multiple print failures. The regular Prusament PETG never gave me this kind of problems with the default profile. The problems persisted with both satin and textured sheet, no matter how well I cleaned it. The filament itself was well dried (which is important for V0), holding at 22% humidity in a dry box.
Finally, I tried increasing the nozzle temperature from 230°C (preset) to 235°C and all the problems just vanished. I think I could comfortably go even higher. Do you have similar experience? Should I try to push the 235°C as a new default profile for V0?
RE: Ideal print settings for Prusament PETG V0
The temperatures are calibrated to brass nozzles. If you use hardened steel or a diamondback for example, the ideal temperatures will shift to the thermal properties of the nozzle material. Usually though for adhesion problems, raising the bed temp for the first layer can also help. As for the preset, were you using the Prusament PETG profile? Or is there one specific to V0 (not in front of my computer to check). If the former then I would expect issues. Different additives and sometimes different colors even can alter the properties of the material.
Regardless, of whether a stock profile is available or not I always calibrate filament on first time use.
RE: Ideal print settings for Prusament PETG V0
Yeah, I tried printing with both 0.6mm E3D Obxidian nozzle and 0.4mm brass nozzle (high flow, the one that came with CoreOne). The problem was roughly the same with both (terrible). I used profile "Prusament PETG V0" that should be specifically calibrated for this particular filament (they make just 2 colors, that's it). I understand that calibrating filament is sometimes necessary, but in this case, I used filament made by Prusa, on Prusa printer (you could say flagship, at least for consumer-grade printers), with recommended presets. In this constellation, I'd expect the print to just work (and indeed that was the case with all other Prusa filaments that I tried so far).
RE: Ideal print settings for Prusament PETG V0
Yeah, I tried printing with both 0.6mm E3D Obxidian nozzle and 0.4mm brass nozzle (high flow, the one that came with CoreOne). The problem was roughly the same with both (terrible). I used profile "Prusament PETG V0" that should be specifically calibrated for this particular filament (they make just 2 colors, that's it). I understand that calibrating filament is sometimes necessary, but in this case, I used filament made by Prusa, on Prusa printer (you could say flagship, at least for consumer-grade printers), with recommended presets. In this constellation, I'd expect the print to just work (and indeed that was the case with all other Prusa filaments that I tried so far).
My suggestion then is to use a separation layer like Magigoo or some other type of glue stick. You can also try a different build plate like the BIQU CryoGrip Glacier which I use exclusively. My Prusa satin and textured plates were sent to the recycling center a while back. I never had great success without keeping them meticulously clean. Even a single errant fingerprint on those sheets can be enough to ruin a print.
RE: Ideal print settings for Prusament PETG V0
As I already stated, setting nozzle temperature of all layers to 235°C instead of 230°C solved the problem for me. I wanted to let others know about this, if they bumped into the same problem and also to discuss whether the preset in PrusaSlicer should be changed. I don't have a problem with my sheets, both satin and textured works quite well for PETG (including the PETG V0, once the nozzle temperature is increased).
RE: Ideal print settings for Prusament PETG V0
As I already stated, setting nozzle temperature of all layers to 235°C instead of 230°C solved the problem for me. I wanted to let others know about this, if they bumped into the same problem and also to discuss whether the preset in PrusaSlicer should be changed. I don't have a problem with my sheets, both satin and textured works quite well for PETG (including the PETG V0, once the nozzle temperature is increased).
The presets are starting points and not truth. Not sure how Prusa validates them but even for Prusa filaments, I create my own from scratch. And they can sometimes be wildly different. Makes me wonder if some of these presets where calibrated on a MK4 and simply copy/pasted to the Core One.
If you are not printing straight PLA or PETG and doing functional prints with engineering grade materials then it's to one's benefit to create your own custom profiles.
Increasing the nozzle temperature in your case works, also increasing the bed temp can help. Sometimes though doing the former can resulting in excess stringing or bad bridging.