Posted by: Danny Mcguire on February 28, 2002 at 22:37:01:

In Reply to: Drilling Through Stone Posted by: Rob C. on April 26, 2001 at 10:31:36:

Okay, I need to make two really big holes, (one 2.25" around, the other 4" around), through a stone wall that's about 14"thick.

Rent a core drill from a tool rental company. The company should also rent core bits that are 2.25".