For those above still struggling with PETG. The solution is fairly simple- Create a new printer profile and call it XXX-PETG. Then in the profile change your z offset to 0.03 or as high as 0.05. PETG does not like to be squished like PLA and ABS. You need to drop it down on the plate. You will rarely ever get blobs, scarring at edges of holes, wisps on the top layer etc. Also bridges should be slowed down to like 15-20mm/s and extrusion rate smoothing set to 350 and segment to 5mm. All your problems solved. I have thousands of perfect prints with these and other settings. Your welcome.
@wiremeup Which brand and model of PETG are you using?
Several. I’ve used BL, Atomic, Hatchbox, Overture, Inland, Phaetus, IEMAI. Many of these I have used petg-CF also.
This one is really simple. Cut all your speed settings in half. The stock profiles for PETG are too fast. Of course if you want to dial in for speed your could but in general if you want your prints to just work, go for half speed. Cue a guy to pop in and say he prints full speed all the time with no issues… My response is this, i bought my machine to print petg so when i didnt i figured out why.
That’s a very broad and vague suggestion. Normal petg stock settings range from 12-15. Are you suggesting a mvfr of 6? Thats actually worse for petg since it allows stringing and oozing. Print hot, print fast with high acceleration. Cut speeds on the slicing profile depending on what you are printing. My flow rate is between 12 and 17 depending on the brand of filament. You do not need to regress to tpu speeds.
Nope i did not suggest that. Half speeds really is not too unclear i hope. What im suggesting is that if your wondering why your machine fails to print petg stock out of the box like mine did, half speeds will fix the problem wih no loss except very tiny amounts of time. But failed prints waste way more time. Im just talking SPEEDS, not Acceleration. Bridging is based on percentages so that can be left. Its like 4 or 5 boxes to change. Petg likes to print slow
In my case switching to arachne as the wall generator helped tremendously, as did switching to the newer high speed PETG filaments. With those I get a higher confirmed maximum volumetric flow rate than with PLA, which was previously unheard of. The benefits of the new PETG filaments has been discussed on other threads, so no need to rehash the details here. Give it a try, and then you can decide for yourself whether or not the upgrade is worth it.
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