Thin Walled Cylinder Deformed at the Bottom

[Chachin]

Thank you for the explanation Printbus. Yes, I am printing on a heated glass bed coated with Garnier Fructis hairspray. I do have some blue painters tape on hand. I've never printed on tape before, so I will give it a try with the bed cold and the tape swabbed clean with alcohol. I'll report back.

For reference, I attached a photo of the same cylinder being printed on top of a thick plastic base (different part sharing the same cylinder). The same thin cylinder does not deform in this case.

Chachin..