3D Printing

Chances are you are squishing too much first layer, so adjust that first. Then print over residue with slow speed and 5-10° hotter than usual settings. Residue should come off with print.

I clean my print surface with some isopropyl alcohol between prints and then wash the sheet every so often with warm water and dish soap. I use a satin textured sheet rather than a Pei one on my Mk3, most prints self release when cool but petg does leave some residue, IPA cleans that nicely. I did use a Pei sheet in the past which I used gluestick on, largely because I do a lot of printing with petg and the one time I said eh it'll be fine I ripped a chunk of the surface off with the print, gluestick definitely works for a clean release, and I found I didn't need to reapply every print.

For really stuck on stuff, like an early cancellation, I have a plastic scraper. Using that and flexing the sheet back and forth until I can get under a corner is enough to pop it off. Usually it's the lead in purge that prusa slicer starts with that I need to do this with. A quick clean after than and it's good for the next print.

I would recommend a PEI print surface like this: https://www.amazon.ca/gp/product/B08L39BFVJ

Most of my bed adhesion issues (too much or too little) went away once I got this.