I have two P1P printers, and I print on the engineering plate with PETG exclusively. At the moment I only have one engineering plate, and one printer (“printer 2”) is DOA (support has been contacted). I have more engineering plates on order.
Prior to “printer 2” giving up the ghost, this engineering plate worked perfectly without any adhesion issues or problems. But when that printer died I moved that engineering plate over to “printer 1”. But I am experiencing failed prints due to adhesion issues on printer 1 with this same engineering plate.
That tells me the issue isn’t with the engineering plate but some physical attribute of the printer 1 system. I suspect that the first layer z distance isn’t right and if the first layer was a little more squished down to the plate it would help a lot.
Is it possible to adjust the first layer z distance?
It can be adjusted in the “Machine start G-code” like this:
G29.1 Z{-0.04}
You’ll need to set the offset value (-0.04 above) to the desired offset.
Thanks. What do you think is a safe value to lower the nozzle a bit? -0.08?
It depends how far away the nozzle is from the bed. I’d start small (-0.02 or -0.04) and go up from there. You can cancel the print after the first layer if the nozzle is still too far away.
I’m assuming that a lower number will result in the nozzle being closer to the plate? So (-0.08) will be closer to the plate than (-0.04)?
That’s correct. Just suggesting you start small so the hotend doesn’t crash into the bed.
I just don’t get it. I also have an X1C with engineering plate, and the exact same model, same filament etc prints perfectly fine on that engineering plate. But I just cannot get things to stick on the engineering plate in that specific P1P.
Manually tramm the bed. You should not need to adjust g-code to level a bed. There is a wiki on it. I had some really bad failed prints that resulted in the the bed becoming not so level. Think extruder crashing into print over and over. I use the EP plate now as well with the Bambu Liquid glue and so far it has worked fantastic. Zero failures from bed adhesion with over 100 items printed.
Something is just odd with this printer. This is a new P1P.
What would cause this kind of finish change in the middle of a print?
