Table saws with elevation mechanisms are disclosed. The electron source produces a beam of electrons with a voltage of at least about 1 kV that impinges upon the anode plate. A detent ring is positioned coplanar to and within the circumference of the detent housing. The deformation section is elastically deformable such that the second arcuate section and the first bent section approach each other. The proteins may be used in the treatment of bone and cartilage defects and in wound healing and related tissue repair. More particularly, the reactivity of a hydroxyl group of urushiol extracted from fresh Toxicodendron vernicifluum is removed before the lacquer is used as a UV coating agent for a substrate such as a steel sheet.