The basic length is to hold the hammer and be able to bend the arm 90 degrees. Hold the handle one finger short and keep the elbow high. Widen the bosom and use a lateral wrist rotation to strike the chisel head. Strike with a flat surface (slightly rounded on the opposite side). Look at the cutting edge of the chisel and the processing point. Straight wrist : Easy to injure the wrist Elbow is down : Chisel head and hammer face do not meet properly Looking at the chisel head : It is important to keep looking at the cutting edge and checking the processing Hold the hammer handle short : Centrifugal force and handle flexing do not work properly Hold the chisel short : Makes it difficult to strike the chisel head accurately Keep cutting at a width of about 0.02 inch (0.5mm).
Accurately adjusted chisels can process straight. Correctly striking the hammer enables straight processing Various hammers are used depending on the work..