Hey, apologies if this is a duplicate post - my search foo is pretty bad nowadays I think :< - but I wanted to ask how others clean PEI sheets?

I see a lot of rather conflicting information, in particular whether to use cleaning alcohol or not on it. I intuitively understand Acetone is a no-no, but what about just alcohol? Does that also damage/roughen the surface of the smooth side?

Should I use window cleaner on the smooth side?

Just dishwashing soap to be on the very safe side?

Or is there some specialized PEI cleaner?

  • @SpottEnglish
    3•11 months ago

    Acetone is fine.

    This is actually one of my pet peeves. Acetone is far from the “universal plastic solvent” that it has as a reputation…

    Ultem, aka pei actually does great with acetone: https://www.astisensor.com/ultem.pdf.

    I use acetone pretty regularly on my sheets and I haven’t noticed any bad effects. Usually it is best to use soap and water, acetone and isopropyl alcohol. If things won’t stick, do all three (in that order).