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12-28-2013 01:53 PM #11
carbide ball mill or a spade drill .i would not heat it less you want to work hardened it a EDM will cut it as well as a diamond dip hole saw may work or a mounted stone grinding point on a die grinder and grind a hole . carbide ball mill will do it less glass hard then it diamond or EDMLast edited by pat mccarthy; 12-28-2013 at 01:59 PM.
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip





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I'm happy to see it back up, sure hope it lasts.
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