A third of the force can be sculpted to by hand, throughput 3–5 times to cut, without fatigue. Each with five special Chisel Tip with a small wrench Cannot be used; alone, should be used with power tools, such as suspension grinding machine, small grinding machine, flexible shaft electric drill. And the rotational speed should be lower than 12000. In addition to general wood, but can also be carved. in ebony, flexible plastics Shell is solid, excellent thermal performance, very safe