In this video I walk through my Hougen Rotacut sheet metal hole cutter kit and show why it replaced my twist bits and hole ...

Copperhead annular cutters from Hougen Manufacturing Inc., Flint, Mich., have carbide-tip cutting edges brazed onto a steel body for wear resistance when drilling hard alloys or abrasive cast irons.

Hougen takes the difficulty out of enlarging existing holes using its new hole-enlarging pilots and Rotabroach ® cutters in portable magnetic drills. Enlarging an existing hole can be a time consuming ...