Dealing with cast iron / stress?

[Highpower]

(01-23-2013, 10:23 PM)PixMan Wrote: In a perfect world, you would rough machine it then set it out in the elements to natually age and stress relieve itself. When I worked for a machine tool builder in my youth, they let the rough machined casting age outside in the New England weather for between 6 months and 2 years.

Ken, what did they do, if after 2 years the casting shifted or warped?
Re-machine it and let it sit another 2 years, or did they just run with it as is and put a final finish on it?

I think I'll have to call around town and see if I can even find a place that I can take it to, and what the cost might be. Most likely there will be a minimum charge that is 3 times what the casting is worth...
That would definitely pronounce the idea D.O.A.