On fb Denny was talking about Shadow drilling guillys. Ill do this sometimes with techniques that are on my mind. I really don't do it enough though. What do you guys think of shadow drilling and what do you typically focus on?
Last edited by John Alighieri; 02-10-2012 at 04:34 PM.
Last edited by Jack LaBarge; 02-10-2012 at 07:43 PM.