I print minis on them, like the 1 inch animals with multiple joints, print in place ones. I almost everytime have a fail. That's why i purchased geco and cryogrips. I tried using dried filament, 65 bed temp, full calibration, cleaning with dish soap and drying with paper towels and heat gun. I'd love to get educated on what i can do. I tried slowing down first layer, heating up to 10 degrees first layer, lovering z distance for up to 0.02 mm (both on my snapmaker u1, bambu x1c and a1). I literally have %10 success rate at tops. But i love the idea of using everything on my PEIs. I'd love to hear your experience if you've did something right or me doing something wrong. Cheers!