View single post by jcdean
 Posted: 04-04-2011 12:12 pm
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Joined: 02-22-2006
Location: Oklahoma City, Oklahoma USA
Posts: 169
I had to use a "screw knocker".

It is a impact head with a handle on it that accepts a phillips (or any other) bit.  You place it in an air chisel and, with light use of the trigger, back those puppies out.