Hi,
I got a spot of Gorilla glue (Polyurethane) on a CARF model. It cured before I noticed. I tried scraping it off with a plastic razor blade, with no joy. I read acetone may soften it. I'm worried acetone will harm the paint. CARF paint is not covered with urethane clear and even alcohol can damage it.

Any tips?

Test the acetone in an inconspicuous area like the over spray on the inside of a hatch or wheel well.

Also put some Gorilla glue on some scrape to see if the acetone will even do anything to it.

Acetone is much more savage on paint than alcohol, I wouldn't be putting it anywhere near paint
unless you are trying to remove the paint.

Can you heat the glue spot gently then try to roll it off with your finger?

I got it off. The glue was pretty hard. A plastic razor blade had no impact. I surrounded the glue with masking tape and went after it with a steel razor blade. It final popped off! No chemicals needed.
Its always best to wax the airplanes 1st, so glue doesn't stick. I seem to get glue somewhere unwanted everytime, its my trademark. The older I get, the less I care. There will always be another airplane.