I’m about 2 months into hobby printing - I just switching from my first kilogram of PLA to my first kilogram of HIPS.
The changeover was fine - there was a fine tutorial on [youtube]https://www.youtube.com/watch?v=xpT5j2pZVeQ[/youtube] by the folks here at Lulzbot. The PLA was a little tough to pull out, but it worked.
The HIPS seemed a little gooey-er than the PLA. (I used the stock profile for Cura for fast HIPS.) After my first print from the HIPS roll finished, I used the tool to lift the plastic off of the bed. The pre-printing frame was a little bit stuck, but I pried it gently off. My test print came off easily without residue.
The concern is that the pre-printing frame still has lightly visible traces of plastic on the bed. Is this too early in the lifecycle of the PEI surface to consider the light sanding (2000-2500 paper) mentioned in the manual?