[TheForge] Brazing cast iron

[Gladish Family]

There's another fine point re: repairing cast iron that I read in a welding
manual years ago. If you prep by grinding, it smears the carbon all over the
surface to be welded, making it very difficult to bond to. However, if you
file it, (I bet the degreasing accomplishes the same thing) the file cuts
rather than smears and leaves a much cleaner surface.
I can really see the difference in ease of attachment.
Andy G.

BTW, this is not my idea- it's from a welding manual circa 1955

> Adam, there is a special brazing flux for cast iron..There's an
> old  blackened red  can that I've had for years that was for that but the
> label was burned off years ago..theres some crusty black flux powder in
> it.  Might ask the Anti-borax Co.. Most Important for that sort
> of repair,
> is de-greasing.