Its useful, though not my pick for hollowing. I echo what hockenbery said. I chose the Jamieson captive system and am very happy with it. I would go with a hinged articulating type before a stand behind - I want to control the bar with my fingers close to the work. But its all personal preference. After using the carbide cutter and the hss cutter that came with my system, I prefer the old fashioned hss for bulk hollowing (bought a lifetime supply of cutters, 5 3” long m42 bits, 10 bits when cut in half, for $18). Use the carbide to smooth up areas where needed - again, personal preference.