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Thanks, that is a good thing to know that it won't change the material properties... That is why he was opposed to my other ideas of thermal stress relieving the part, etc. I do agree w/ your comment about focusing on making a good part to begin w/ though... as everything I have learned about...

Thanks for everyones help, it is greatly appreciated! I will be sure and keep you all updated on rather or not I end up getting the job. Like I said in my previous post, this has been going on for close to a month now, but I do really want to get my foot in the door in the aerospace and...

Ok, thanks very much! I am just asking about the surface incase he is to bring that up to me after suggesting shot peening when I go back in there for the next interview. He really likes testing me.

Thanks for the info! Now say you can't avoid peening an interfacing surface where the roughness is critical, would lapping help in this instance? I am not real familiar with lapping either, but is seems to me like that might be useful in that instance.

TVP, This is a question which has been asked of me by an interviewer. I suggested to him that a) they start w/ materials that have already been stress relieved and b) that they perform stress relief annealing after machining the part and/or a cold stabilization method. His response was...

I have been presented with the question of how to manufacture a thin-walled Monolithic aerospace part and to control distortion to within the tight aerospace tolerances by a possible employer. The part is roughly a 4' x 2' part, maybe 3" or 4" thick, and to be machined to 0.060" thin walls...