[TheForge] Welding cast iron

[Gladish Family]

One tip that has helped me in the past is to use a file rather than a 
grinder to clean the mating edges. The explanation given to me is that 
the grinder smears the carbon that is in the cast iron (high percentage) 
and makes a dirty surface, though it's not apparent to the eye. Of 
course I usually use a jewelers hard silver solder for cast if 
possible...I've gotten many invisible joints on smaller parts this way, 
with careful prep.
Andy G.

Bob Ehrenberger wrote:

>I have a need to weld a cast iron part.  What is the appropriat preheat/post
>heat temp.
>
>I was thinking around 600 deg. Am I close?
>
>The last time (about 10 years ago) I just put the part on top of the wood
>burning stove. Now I have an oven in the shop so I can use a little more
>control.
>
>Robert Ehrenberger
>Shelbyville, Mo.
>eforge at centurytel.net
>
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