I let it print and looked like a good start. I came back a little over an hour later and I noticed some edges had warped and lifted off the plate.
You can see some of the corners warping in the time-lapse:
I killed the print job at that point since it failed.
Switched out the plate with my aftermarket plate and loaded the same print job but I realized the the corners that lifted were on the side with Aux fan.
So I resliced with the Aux fan turned to zero for the entire print
Perfect print:
Since that one printed perfectly, I tired it again with the stock gray PEI textured plate and no Aux Fan:
Almost perfect. There was a tiny bit of warping in the corners but not nearly as bad as the first go around.
It’s harder to see in the still pic, but the time-lapse shows a little bit of lift in the corners.
In conclusion:
Turn the AUX fan off for larger prints.
After market texture PEI plates seem to work better than the stock PEI plates.
(Amazon.com)
I don’t have one, but I am curious about what would happen if I ran that same experiment with the newer Bambu Gold PEI plate they ship with now.
If I have to go no brim on the field pieces I am going to run in a couple days due to space issues I will see what happens with 65c and no fan on the gold plate.
had my first failure with the new settings. 8mm brim and 65c on the bed with the PEI plate. First time I have tried the Honeycomb wall field piece, the ones that worked were edges. This had failures on two opposing sides.
Cleaned with IPA,
same sides as last time
It’s been suggested before, but I see no mention of it being tried:
Grease cutting dish detergent, warm water, nylon brush to get in the recesses (old tooth brush will do), thorough rinse with hot water, dry with a clean towel, don’t touch the print area.
IPA does not clean as well on the textured plates, and Bambu recommends warm water and dish washing detergent.
I am having the same issue with my HWS printing, and I too think it is the fan. The only corner I have this issue with is the back left corner (when looking in from the front) and that is the corner that has the fan blasting on it all of the time.
I printed 4 plates, three on the Bambu textured PEI and all had this same issue. They were will AnyCubic PLA (both Generic profile and a profile I made to give more bed temp).
The fourth plate I printed was on the smooth PEI plate using the Bambu Lab 3D printing adhesive (green bottle) and it printed just fine with the same PLA.
Next I am going to try again on the textured plate with zero aux cooling fan and see if that works or if this will just cause some other issue.
I set my fan to zero for the first 5 layers. That with 65 degree bed temp and a wet sand with 1500 grit then a dawn wash seemed to do the trick for me.
Setting the Aux fan to zero fixed this issue. I am looking at making and installing an Aux fan diffuser so it doesn’t just blow right on this corner of the plate. But for now, for this build, turning the Aux fan off seems to have solved this issue when using a textured PEI plate.
