Hi, I am new to the forum and relatively new to 3D printing, I have a P1S and a H2C. Having a problem with the H2C. Printing a part with PLA-CF and support filament. I had problems using Bambu Original support filament at the same spot in the print. Made sure all filament is dry. So I tried the new support filament. The print I am doing is 4 pieces and a 8 hour print. When I did just one of the pieces with the new support filament, it worked great, Seems when I get to their point either with the old support filament or new with all four pieces, 5 hours in, It happens. I tried printing at a differnent orientation and did not have problem. I did not want to upload a bunch of unecessary things. But here is a picture, if someone would be kind enough offer some direction, It would sincerely appreciated. Thank you, Kurt
Have you made sure that the bottom Z-offset is set to 0mm?
By default it tends to keep the bottom Z-offset to one layer height (usually 0.2mm).
Might be the reason for poor adhesion.
Thank you so much, I had the Top set to 0mm but the bottom as you pointed was set to 0.2mm. Again, thank you so much for getting back to me and offering your expertise.
Your welcome.
Hi Gerrit, I did the bottom to 0mm and ran again, same problem. Anything else you would suggest? Thanks again for your help.
Sorry to hear it wasn’t the solution.
Some general advice for testing. Lower your model to a height, that your possible issue occurs after 10 layers or so. Saves a lot of time and filament.
You still might experience the issue due to moisture or just poor adhesion between the two materials. Though the prime tower seems to have no issues with adhesion.
Drying the filament won’t hurt.
Lowering the speed of the support (possibly by lowering the maximum volumetric speed) might help here too.
The Z-offset was one that caused a lot of issues in the past for me. But there can be many others.


