For cutting large 16- to 24-inch holes in rock, you’re looking for heavy-duty industrial equipment. These specialized tools have carbide teeth on a rotating head to grind through hard rock, often requiring significant machinery for such substantial diameters. The Penta-Bore from Rock Bit Industries is just such a tool.
“The Penta-Bore is a five-cutter tool designed to cut large holes in rock with a PSI greater than 6,000,” says Robert Light, business development manager for Rock Bit Industries. “We’ve had plenty of customers tell us that this is the only rock tooling they will ever use.”That’s because the reamer is built
