kaharshs
1/2 ton status
"Dimpling" the metal properly wont bend the surrounding metal, applying to much pressure on the dimpling dies will stretch the surrounding metal and cause distorions. Is does suck to dimple thick stuff and hard metals. Such as titanuim we use heated dimpling dies that heat the metal to 700-800 degrees in the dimple area. I have done as small as #40 sizes up to 4inch holes and had good luck.
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