Hi,
After my heated bed gave up the ghost on my otherwise unstoppable RepRapPro Mono Mendel I decided to try some alternative print bed materials. I had some scraps of 8mm PET-G knocking about and though I'd try that.
Printing PLA with the initial layer at 200c works a treat!
You absolutely have to avoid the hot end touching the bed while it's hot. It melts into it
.
I always check z-height with the HE cold (pinching sheet of paper etc etc) then home it off to the side, heat up and print.
Everything has stuck so far and peels off nicely. Bed adhesion is good and very even. No visible sign of degredation of the PET-G yet after a dozen or so prints.
I will give ABS a go but my gut feeling is that it will stick well but warp off the cold bed.
Rob