I just got a x1 carbon a week ago. It has been running great. using the pla that came with the printer. (it really is pretty awesome.) I ordered some random filament from Bambu and one that i bought was their gold petg…
I threw it in and printed a part for a harmonic drive and it seems to under extrude either at the end or the beginning of a movement…
I ran it twice - the second one has random seams… You can see the same issue…
random seam…
Flow ratio and k-factor should be calibrated.
After that it shall look much nicer.
is there a ‘how to’ on calibrating the bambu for a given filament?
X1C should be able to do these automatically I think (I have a P1S which is all manual calibration)
Calibration of each filament will help greatly. Bambu also has things set too agressive for their own branded PETG in my opinion. I have much better results selecting the generic PETG profile which slows things down to much more reasonable levels.
As already mentioned by other users, check the settings for the filament manually. Some filaments cause problems or change the printing properties in a noticeable way if certain particles are mixed in. This can happen with white filament, but also with exotic filaments such as gold-coloured ones. Dry the filament if you have not already done so.
You can try out whether it prints better at a lower speed by setting it on the machine from “Normal” = 100% to “Quiet” (other levels are, for example, “Sporty” = 125% and “Crazy”).
This is an image from the calibration process. At the end it says Save to Filament Preset and suggests a name. Any suggestions for naming these calibrations? Are they worth keeping or simply writing over the previous settings?
The name just needs to be different from the original presets so you can tell which one you’re using.
They are saved as a different filament profile than the original so you need to save it,
Ok, I get that they need to be saved. Why change the name? When am I going to go back and use the old preset?
I don’t know but the way Bambu made it means that the name of your filament profile can’t just be the same as the default filament profile
hmm - I have printed a few other things with petg and it seems ok… but this model - no matter what I do seems to under-extrude at the seam…
I calibrated and the K factor is now .05 - but there doesn’t seem to be any change. Could it be a model problem?
it was also printed at 100% infill… it doesn’t look 100%
this is the model (yes I made it a long time ago)
You want a new unique name for each individual filament. I usually go with “Manufacturer Material Type Color” for example “Matterhackers PLA Build Black” or “Bambu PLA Metal Iridium Gold”. Once calibrated and named they will show up in the filament profile list for that nozzle size. Bambu Studio will not auto apply the calibrated profile, so you will need to manually select it before slicing
Oh… and the above section was printed at 50% speed
I also had very similar problems with their PETG. In addition I often had loose strands.
Key to better prints was reducing all speeds to 120 mm/s or even less.
Other brands of PETG behave much better in my experience.
Bambu PETG Basic has been discontinued with a note saying “Note: PETG Basic is discontinued and will not be restocked once sold out. A new and improved PETG is coming soon. Stay tuned!”.
From my own experience with Bambu PETG, I also see that it performs poorly and the promise of using a Bambu printer with Bambu filament meaning worry free and good results was not fulfilled.
Here’s hoping they bring out a much improved Bambu PETG soon!
Perhaps you should print benchys first. I did the same with PETG when the printer was new. I printed out about 8 Benvhys and adjusted the settings. You can check the strength in the Z-axis on the chimney of the Benchy. However, the chimney can withstand some lateral pressure when printed in PETG. If the chimney is very easy to break off, print the PETG too quickly.
If you are printing small details with PETG you need to get the speed down, seeing the small teeth in the photos I would assume you are not printing this any faster than 25mm/s to 45mm/s.
