Try isopropyl alcohol (higher % = better results) and kosher salt. The salt won’t dissolve in the alcohol and will act like liquid sandpaper that won’t damage the glass. The alcohol will weaken the resin and make it more likely to separate from the glass.

Put the whole thing in a container of some sort (ideally something sealed that you can shake without breaking the glass), then add the salt and pour the iso in. Shake it, let it sit for a bit, then shake again and drain. After that, if there’s still stains or anything soap and water will usually get it.

Only throwing this out there cause I saw ‘power tools’ and I had a panic over the glass’ safety.