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[martin]

Yea 10/4... Well we hqve burned out many slum stators ..iron core.. and had good luck... These are pumps qnd motors with flow tollerancea for bearings and shaft alignments... I know that there are set points as to what materials are being burnt... I think he had it set at 800. For 3 hours.... Then u slowly bting temp down... I did not see any warping or cracks... I did spray some crack dye just to check the welds

[Blue_Heron]

Originally Posted by martin

... I did not see any warping or cracks... I did spray some crack dye just to check the welds

It's not a stress/warp thing, it's a strength thing. Some aluminum alloys lose a significant portion of their strength when heated near their melting point. You might want to look at the alloy the bracket is made from and find out if annealing it causes it to lose strength. On the other hand, if your friend routinely cooks aluminum in his oven, he may already know the tolerances.
Dave