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Old April 30, 2013, 09:03 PM   #6
Tuzo
Senior Member
 
Join Date: June 14, 2007
Location: Louisiana
Posts: 724
One more item in addition to the truth of Snuffy's remarks. Sand media on thin metal causes micro dimples thereby increasing surface area and metal expansion. I know because I tried it and the blasted cases were out of spec for diameter and a bit for length.
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