Stripping a grip frame?

[woody]

I have a few Ruger aluminum grip frames I want to strip. What is the best way you have done it? I've done several in the past but just wondering how everyone else does it. Also is the surface hardened with the anodizing? If so when I strip it does it make it more susceptible to dings scratches etc.

[foxtrapper]

Heard oven cleaner( caustic) one works. I just went at it with sandpaper, it worked.