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Posted by Ephraim [216.241.207.242] on Wednesday, February 09, 2011 at 10:32:59 :
In Reply to: OT cutting a hole in a concrete wall posted by David Sherman [72.47.9.228] on Tuesday, February 08, 2011 at 20:09:23 :
I would rent the Concrete circular saw (the big one is 18") Cut down both sides as deep as it will cut, then use a sledge hammer and electric chipping hammer to knock the rest out.