I’ve had a MK4S for over a week now, and 100% of the prints I’ve tried to make on the textured sheets have partially or totally failed. PLA prints beautifully on the smooth sheet, but PLA, PETG and ABS, I think I could print on the surface of a 10 inch tank of oil with more success than the textured sheet. Plastic doesn’t stick to it. I’ve wiped it with isopopyl, I’ve washed it with dawn…it’s a bad print surface and I want my money back.
I’m the kind of guy that, when I find something that works, I’ll stick to it for a decade. Hence why my Folger 2020 i3 with its mirrored glass print beds were in service until 2026. PLA prints well on the smooth sheet, so that’s what I’ll do until America elects a female president in 2036. So PEI is going to be my fascist era print bed. I printed on glass when we were a republic. Polymer print sheets are for dictatorships I guess I’ve decided.