u/Keepingitnormal

Trying to print stacked 8x8 OpenGrid tiles on a Bambu H2C using PETG for the tiles and PLA as the interface layer. Single tile prints fine. Stacked prints keep failing in different ways. So far I’ve tried:

• slower speeds/acceleration
• brim + glue
• cleaned plate with dish soap
• 70C first layer then 65C
• tuned top layers/walls
• closed chamber

Main issue now is the PLA interface eventually turns into spaghetti during the second stack. Earlier I also had lifting/warping on the same side of the plate repeatedly.

At this point I’m not sure if this is:

• a bed/chamber issue
• PLA interface temp issue
• or just pushing stacked PETG prints too far on larger tiles

Anyone have a stable setup for stacked OpenGrid prints?

Trying to print stacked OpenGrid tiles using the BlackJackDuck parametric generator with PETG tiles and PLA interface layer between them. But when I open the generated 3MF in Bambu Studio, it shows as one object with multiple colors instead of separate objects/bodies, so I am confused how to properly assign PETG to tiles and PLA only to the interface layer.

Also got some weird slicing/interface artifacts earlier. Is this normal with the generator? Or are people manually stacking single tiles in Bambu Studio instead?

Eventually I want to do 5 or 6 stack prints to save time. Is there a recommended stack height people usually stick to on the H2C?

Attaching screenshot of the parametric generator settings and screenshot from Bambu Studio showing it imports as one object in case someone can spot if I messed up a setting . Can also share 3MF file if needed