Hello, I an new to the 3D printing world, and this is my first printer.
I dived myself a lot into it and began to print with PETG for a project.
Unfortunately, I am having string issues on my first layer when printing with my P1P.
Here are some pictures of the (stopped) first layer
And here are the config I am using…
Does anyone have any ideas of what is the issue and how can I resolve it?
Thanks a lot
Maybe adhesion issue.
Wash the plate with water and dish soap.
Try not to touch the surface on printing area with your fingers.
First of all, download Orca Slicer and run some calibrations for the material, temp tower, flow rate, preasure advance, then try again after you have dialed in the filament settings.
+1 on calibrating for every new filament.
My first attempts at using PETG also had major problems - not sticking to the plate, strings, blobs, just a mess.
I found a temperature tower which told me that I needed more heat. That change alone took care of the adhesion problems and most of the stringing. Then I tried the calibration procedures for flow and pressure advance in OrcaSlicer and those changes cleared up the rest of the stringing and blobs. I also stopped using flow calibration for every print, which saves some time.
Try drying the filament. If you don’t have a filament dryer, use the bed for the suggested time (65˚C for 6-8 hours for PETG). Bad first layers like that seem odd for this machine.
I run my polylight and polymax PETG at 270 degrees based on the Temp Tower results.
i also had lots of problems printing PETG. the reason is the printer is just too fast. i now have an enclosure (ARC) and it’s much better at higher speeds. however i would just try with half the speed on the P1P, this could resolve the problem.
Printing PETG has been very simple for me using the default profile. The OP’s settings show a volumetric flow of 10mm3/sec, so its definitely going pretty slow. Like you, I have enclosed mine (a PETG print for me, instead of the ARC enclosure), but I don’t think speed is the OP’s issue. The OP’s prints are seeing issues almost immediately. Nothing wrong with going slower to improve quality, but this looks to be failing at the glacial first layer speed.
Personally, I’m still on the boat of too much moisture in the filament or an odd temp anomaly somewhere. I’m noticing the OP’s has wondered a good ways off the default profile and is printing significantly cooler than the default profile. They should double check they are selecting the correct bed plate too. If they accidentally selected the Cool Plate, things could go bad really quick.
My suggestion to the OP is to use the default Generic PETG setting and make sure the filament isn’t overly moisture saturated. Also, as others have said, if you want to tweak the settings from default, use an assist tool like the calibration tower.
I was just looking for the “CALI” button after configuring the settings for the external spool. No cali button exists, is this outdated?
It is worth to do manual calibration for flow dynamics. (calibration menu) Easy to find out which K value is the best just follow the instruction. Yes my result was also 0.03 wiht Bambu Basic PETG.
Part cooling may also be an issue. I once had similar problems caused by to much part cooling!
It looks like the print lifted off the bed while printing, resulting in the mess.
