This may be partially off topic. Sorry if it is.
A fellow service tech is having a problem with contaminated cast iron brake
rotors on one of our machines. (24" dia X 2" thick). I remember in my
younger days when preheating cast iron for welding, solvents, oil & other
impurities would come to the surface. Does anyone know another process to
rid the cast of these impurities other than heating?
17 years ago