I like the thermal mass of glass for temperature stability, as I’ve found that’s pretty key to getting good print adhesion. But I really wanted to try out PEI without having to stick a giant magnet directly to my heater plate, something I definitely did not trust.
Turns out, you can solve both problems! This was how I did it.
I’ve found that that’s a very dangerous website. Especially if you use fusion 360. (you can import parts into your workspace using the mcmaster item number… For, you know. convenience…)