Quote Originally Posted by 76GMC1500
EDM!!!! I don't remember what it stands for, something like electo dissolve-o machining. One of your local machine shops might be able to do it for you. I believe it costs somewhere around $50 per hole to do.
Electrical Discharge Machine :
Two types,Ram and Wire High dollar equip.

Added note on the left hand drill if you have a hammer drill it helps even more.

Don In Austin