Rock Is No Match for a Small Drill and Hammer. Thanks to the right mix of equipment, GSW Contracting has built its business boring through rock. Feb 15, 2011.

Maker claims the pneumatic hammer can drill 6.25-in.-diameter holes at penetration rates of up to 150 ft. per hour HammerHead claims its Roughneck R500 rock drilling system can turn any horizontal ...

Use a hammer drill set to, naturally, hammer drill mode. Don’t force the bit. Drilling in masonry is inherently slow, especially in concrete when you hit a lot of stone.

Best hammer drills for dominating DIY - Veteran hole-maker, ... E ver since primitive man first discovered he could smash things more effectively with a big rock than he could with his face, ...

Man has always had a need to make hole — to drill rock. This was especially true in the 1850s. Our cities were growing; we were moving West. There was a demand for buildings and foundations.

With the arrival of the very first Pantera™ DP1600i, customers in southern Africa can now expect to drill larger holes of up to 178 mm using a top hammer drill rig. The end result is a ...