do you mean the rattle can type (non-activated)? If so, laquer thinner works well. Soak a paper towel well and wipe it off. Use two steps. Get most with the first. and clean it up with the second.

If it is activated, your choices are scraping or sanding. You could also use a strong paint remover, but they are nasty and messy to work with. If aluminum is the base, you'll need to neutralize it afterwards. I have used razor blades, but there is a bit of art to keep from scratching your base material.

Lary
 
do you mean the rattle can type (non-activated)? If so, laquer thinner works well. Soak a paper towel well and wipe it off. Use two steps. Get most with the first. and clean it up with the second.

If it is activated, your choices are scraping or sanding. You could also use a strong paint remover, but they are nasty and messy to work with. If aluminum is the base, you'll need to neutralize it afterwards. I have used razor blades, but there is a bit of art to keep from scratching your base material.

Lary

No, is the activated type and lacquer thinner won't touch it.