Question.
I am constantly plagued by an uneven print surface, eg bowing, dipping etc. I run a I2 with an aluminum base plate + leveling screws and a heated bed. I have had a glass top (split in half) I have had a 2-3mm pressed wood plate under the heated bed etc to try and stop the bowing, yet I’m still facing these issues. Only thing I have not had rebuilt was the aluminum plate.
Any suggestions? what are the ways you have over come this nuisance.
Is your aluminum plate overly constrained? You need to let it expand to its working temperature before you anchor it down to the carriage (or any other part of your hbp stack up). Otherwise, a flat plate when cold will bow when hot.
@Joseph_Chiu you posted almost exactly what I was composing but beat me by 30 seconds.
Anchor the bed with one point that is constrained in the X and Y then have the other points only constrained in perpendicular to the line connecting that point and the original point.
The plate might also have internal stress that causes it to bow when heated.