Drills and Bits for splitting stone

In order to use feathers and wedges (aka wedges and shims) for splitting stone you first need to drill holes. Brian Post at The Stone Trust reviews some different types of drills and bits available and what features to look for in a hammer drill. Different types of bits are shown as well as how to diagnose why bits wear out or fail. A side by side comparison showing the drilling speed difference of different classes of drills is included.