Just received my X1C, PLA works a treat from the quick tests I have done, but I can not get PETG to work reliably. I think I have my PRUSA PETG dialled in, however my eSUN just doesn’t want to play ball.
I am using a textured plate and I have had a couple of extruder clogs on the first layer and even mid print. I suspect the first layer may be to do with adhesion on the plate, however for the most part the first layer looks amazing until it gets to the left side of the plate and then everything starts to end in tears (not all the time though).
When it does work the print usually fails half way through when it starts to print air.
I have also tried multicolour prints with PETG but the purge/prime tower is too fast and the petg doesn’t lay down properly. I can’t find how to reduce the speed of the tower.
Which filament preset are you using? I print PETG all the time, single and multicolor, and haven’t seen these issues. I also use the textured plate.
Have you enabled (or not disabled) bed leveling before the print? Make sure that the plate is correctly positioned on the bed, centered between the two guides on the back. (I sometimes find that the plate is shifted up onto a guide, which will mess things up.
The other thing is to check that the bed is flat. A few people get printers with noticeably bowed printbeds. In such cases, contact support about a replacement. (I’m doubtful that’s your problem, though.)
Just wondering, but I had an issue printing one of the Honeycomb Storage Wall pieces in PETG only on the left side. I changed the settings to no cooling on the first 3 layers and slowed down the AUX fan to 50% and everything worked after that. Could this possibly be his issue?
I started with the Generic one and went from there. I did manage to get Prusa PETG to print the extruder tool, but I reduced the print to be very very slow.
Bed is flat (well as good as expected). I checked this when I got my printer. I will test a different piece tomorrow and see how it fairs.
I did attempt the scraper off printables with 2 colours but the purge tower is 2x the speed of my first layer and thus doesn’t stick.
Image one is of ink stations PETG with custom (slow profile)
Image 2, is using Prusa PETG with generic petg profile and the stock fine profile. This looks more like a speed issue on the second layer, too fast? First layer went down ok.
The Generic PETG profile has no cooling first three layers, no aux fan. Which profile did you use?
I wonder what would happen if you rotated that print 90 degrees clockwise and moved it away from the edge of the bed. While most of that sloped part looks good, the part to the far left doesn’t. Above that I see signs of the extruder misfeeding. It may be that filament likes a hotter nozzle.
Hi and Welcome to the madhouse, err, I mean Forum.
PETG is notoriously difficult to work with and the built in settings appear to work fine for some brands but not other (all are blends and vary from manufacturer to manufacturer).
But there’s hope! This PETG topic has be beaten to death on here and there’s settings you can use and other advice. Let me steer you to some answers (EDIT: Click the Blue Links):
First - a lonnng discussion on this, but I’ll jump you to the best settings. If you have some time you might read from the top, but from here down seems to solve it for most people:
The next thing - PETG is notorious for being shipped ‘damp’. ‘Wet’ filament can cause major problems.
I posted a couple responses to another user struggling with PETG, so here’s two posts about that (ignore the drama, he’d been beating his head on this problem and was really frustrated as it’s in a Production environment …):
The next is from the same thread, but has some more tips (again, ignore the drama LOL Happens in forums, eh?) -
Are you using Bambu Studio or OrcaSlicer (the same but with some added features like two click Calibrations)?
I would clean the build plate to make sure there isn’t a component of hand oils causing the first layer issues, and then try the filament drying feature or use a filament dryer.
Also make sure you got all of the clogs out of the extruder. PLA and PETG are not compatible plastics. In fact they are so bad with compatibility that they are good for supporting each other and come apart very easily.
Take care of the obvious issues and see what happens from there. Troubleshooting is a process.
I tried the Generic for the larger (orange) print, so temp was set to 255.
The problem is happening on more than one section of the bed, so I don’t think its the bed that is the issue
I have actually read a large chunk of these posts
I am trying that Flowrate test in one of them on the engineering plate now. I have made changes to the speed (dialled it down as I don’t have confidence in the default speed) and will work my way back.
Let try these base line settings you should be able to print petg.
Tip: The automatic flow calibration setting check box is on and just so you know the texture bed plate can give bad calibrations.
When you do a manual flow calibration turn off the flow calibration check box before you print.
The manual petg flow setting can be around 0.98 to 1.07 range for petg most of mine are in the upper range and I’m using ocra slicer and ideaMaker slicer with the X1 plus I also use 10% infill overlap on some parts.
Start with these base line settings for petg you can turn off ironing for now this works for my petg but might not work for your petg you would have to test it using a iron test for speed and flow.
You can turn prime tower off for now you can adjust your flushing volumes for most filament changes and turn the brim off not needed for petg.
Thanks for all the replies, looks like I had a partial clog, so I think that is cleaned up now. I am just doing a flow test. @3DTech I am using Orca currently, I will have a play with your recommendations. Thanks!
@3DTech I have noticed my PETG needs to be slow, I will use your examples as a baseline and dial accordingly. Is there way to slow down the purge/wipe tower? I had issues with that being too quick also
Hey Folks, just an update. Thought I would try something different. I have always wanted to try this for a project : Printables
Figured given it is so slow it may be worth using as a test for this.
Test 1, 1st layer went down well, layer 2/3 started to go get rough in some places as if it wasn’t extruding properly or it was perhaps too close to Layer 1? After a while it came good and the end result wasn’t too bad. You can see the dodgy bits through the print though.
