plaster on metal window frames
I'm at a loss. We live in a 1929 pre-war apartment and have been slowly stripping all our window and door frames from about 1/2" of paint. The actual frames are metal. I'm using SoyGel, which works pretty well. Right now though, I'm in the process of stripping a window frame but I've found plaster under the top layers of paint. Anyone have a suggestion on how to get the plaster off the metal? Any help is greatly appreciated! thanks.