I am having trouble with first layers, and other layers also but it starts here. PLA prints just fine. I have tried:
Cleaning plate
Slowing down
Drying Filament
I am using Bambu PETG Basic and the Bambu profile on a textured pei plate.
Any help would be super awesome, thank you.
Hi,
try to:
This is was I did and I got (and still get) good results.
Regards,
Tom
Thanks for the tips. I’m printing at 255 and the bed at 80. Were do you find the component temp setting? Is it in the filament profile?
Have you tried drying the PETG?
Slow it down much, much more. Go to 1/4 default speed profile settings. Petg can not print at 300 mm a sec or even close. Those settings are insane. Good news is after you adjust the speed to something printable it will still be 3 times faster than any alternatives.
The first layer is an adhesion problem, either an issue with the build plate or with the cleanliness of that plate.
The rest appears to be the common issue with Bambu’s PETG and infill. The best you can do is to use a 0.6mm nozzle or increase the temperature on a 0.4 nozzle and decrease the infill speed. The next step would be to take that PETG spool and trash it. It is unacceptable for BL to release such an expensive PoS.
I print b.l. petg all the time now. It works great no problems at all.
Yet you are the one who is looking at others’ print profiles and speeds because you can’t print BL PETG on a default speed?
Yes, that is certainly not the definition of “it works great” in my dictionary lol.
It does when you slow it down to a speed that is actually achievable. it works great. been printing it nonstop. Still waiting on your profile that can print petg at 250 mm a sec or whatever it is, over on my original thread. Also suggesting people throw out filament is not really that helpful if they can make it work well instead. Nobody is trying to throw out 20 dollars and wait on shipping of a new roll. Petg from bambu DOES work fine at slower speeds, FACTUALLY.
Hey, not trying to slander. Throwing out is a metaphorical figure of speech.
The point remains the same: BL is selling subpar quality PETG, which requires calibration and profile modification, and all that for a premium price. It doesn’t mean you can’t print it. But it’s miles worse than good and cheaper 3rd party PETG.
Thanks for all the tips. I tried a few more with the adjustments you guys have suggested. I Dried it well, Slowed it way down, and increased temp a little. The thing that has made the biggest difference is preheating the bed for about 15 minutes. Have you ever had an issue like that?
If the BBL PETG sucks what would you recommend? BBL PLA prints great.
Please look at VoxelPLA.com they just recently launched PETG lineup, so far they are great.
I had the same issue for a long time and only with petg. I finally figured it out after tinkering around for a long time. I first played around with the flow ratio, which solved the problem for the first layer, but all the others didn’t look very good.
The problem with PETG is that it oozes out a little bit, hardens quickly, and forms a small, almost invisible bump, which then interferes with the calibration. My solution:
Machine Start G-dode
Under ===== prepare print temperature and material ========== S{nozzle_temperature_initial_layer[initial_extruder]-20}
Drop nozzle temp, make filament shrink a bit
G92 E0
G1 E-0.5 F300
Change to ===>
S{nozzle_temperature_initial_layer[initial_extruder]-40}
Drop nozzle temp, make filament shrink a bit
G92 E0
G1 E-0.5 F300
G4 S45 ; Wait 45 Seconds
Under ===== wipe nozzle =============================== S{nozzle_temperature_initial_layer[initial_extruder]-20}
Change to ===>
S{nozzle_temperature_initial_layer[initial_extruder]-60}
The wait command and the temperature reduction before wiping really help keep the nozzle clean.
No Z offset is needed if the calibration goes correctly with a clean nozzle.
Enjoy!
