After the whole A1 cable issues, I decided to return my A1 and take the credit towards a X1C. I already own a P1S that prints really well so I figured the X1C would be equal or better than the P1S.
After setting up the printer, my first initial prints on the X1C were with standard Bambu Basic PLA and I can say they printed them very well. My second set of prints was the X1C AMS riser in PETG and the results were very different. Using the base Bambu Labs PETG profile and Bambu filament, I am getting blobs, stringing, poor first layer issues, buggers on the print, under extrusion, grinding and even had a layer shift on one of the parts. This is with the Engineering plate and glue.
After doing some research I thought that I cracked my issues by using the general PETG profile in Bambu Slicer but that was only temporary. I’ve adjusted both my X1C nozzle and bed temps (255C to 265C and 70C to 80C) and even changed the volumetric speed from 12 to 10 and still not really getting good prints with PETG.
As a test I placed the filament in my P1S and using the default Bambu PETG profile, the first print came out almost perfect. One thing to note is that the P1S has the original PEI textured build plate. This leaves me totally miffed on what is the issue is with my X1C. I maybe could blame the layer shift and maybe the first layer issues on the engineering plate but the other items in my opinion would have been caused by the build plate.
This is not the first time I have printed the AMS Riser. When I bought my P1S one of my first prints on it was the AMS riser but instead of Bambu Lab PETG I used ESUN filament.
Just to clear up some questions, I dried the filament. Prior to printing the riser, I dried it for 8 hours at 60C. I know that most of the recommendations out there are to dry PETG at 65 but I have an EIBOS Cyclopes and with the dryer vent being so close to a full roll of filament, I’m a little afraid of having the filament fuse together.
Anyone have any ideas why my X1C is not printing PETG well? Is it the filament or something I am missing.
Hi. You describe so many issues that it is hard to guess. What’s strange is that these issues only occur with properly conditioned PETG. Maybe basic questions, yet: Are the slicer settings (e.g. cooling fan speed, flow rate, velocity) identical in both printers? Is the filament calibrated (flow and PA)?
I’ve never had (worth mentioning) issues with PETG, using either the Engineering, Smooth or Textured plates. You may try a different plate, but I doubt it is a problem.
Many users complained about problems and found the optimum settings: [SOLVED] Bad quality when printing PETG - #242 by Inevergiveup. You may take a look.
You may check if the X1C mechanics (e.g. belt tension) is OK. It may require some fine-tuning.
If the problem persists, can you print in the X1C a test model (e.g. benchy or other you prefer), sliced using standard settings for PLA and PETG? The results may help to identify or at least discard possibilities.
This is a recurring theme. The default generic slicer settings for PETG have been bad from day 1 and seemingly never corrected in any of the slicer updates. Go figure as to why. Instead, it seems everyone runs across this stumbling block.
Yeah its really strange. I figured that the default Bambu PETG settings with their PETG Basic filament would be close but not with my X1C. During my troubleshooting, I did follow this article and the prints were better but not like this article says.
These are the last settings that I used in my last couple prints on the X1C before I moved over to the P1S which as I stated in my earlier post printed almost perfect with just the default Bambu settings for their filaments.
Ive been printing for over 8 years now with a variety of printers. Most of it has been PLA but I have used other filaments in the past and I just don’t have a answer for what is going on.
Maybe I received bad filament from Bambu. The strange thing is that I bought 3 rolls of the PETG Basic black filament for the AMS riser and the first 2 rolls are having the same issue. I havent printed with the 3rd roll yet. I did buy some ESUN PETG so I guess I will have to test it this weekend to see if I can find out if its the printer, the profile or the filament.
For those who have not printed the AMS riser, these pictures are the back of the riser and the part of the print closest to the build plate. There is a small support section that gets printed prior to these to support the area that that needs to be removed to expose these areas.
