Putting this under hardware since its mostly about the adhesion of the PEI to the bed.
I use PC MAX since it produces parts that I can use in production rather than just for prototypes. It is very strong.
The problem is that it pulls the PEI right off the bed. This is a problem I have been struggling with for a while. I am now on my third piece of PEI and second bed.
In the picture below the Bed and PEI are brand new from Lulzbot. You can see what happens. The 468 MP is not strong enough.
In another post on this issue, Mikronano suggested using thicker PEI. I have a piece of 1/16th inch PEI and a sheet of 468 MP, but haven’t had time to clean up the other bed. And I have my doubts that it is going to work. Seems like the 468 MP is the weak link…