I've used a product called tal-strip ,(I think I spelled it right) its called aircraft paint stripper ,on my aluminum boat prior to painting it, it never corroded the aluminum and you put it on with a brush and the paint swells up and can be rubbed off with rags( not sure about how it would work on the crevices of a saw), only down side it cost quite a bit the last time I looked. I will update with a link if I can find it. Mine came in a gallon size jug.
This is the stuff, I did'nt buy it through this site , I got it at my local auto paint store, The price is about what I paid though.
Mar-Hyde Tal-Strip II Aircraft Coating Remover - 3713
Sorry to the Admin. I could'nt find a link to the actual company!