Fig. 28. The Wooden Plane
This tool, while lacking some of the adjustments of the iron plane, was much simpler and contained a smaller number of parts.
The iron and cap were held in position by a wooden wedge, which was driven in by a light blow of the hammer. The workman removed the iron and wedge by turning the plane upside down and striking the forward part a light downward blow on the bench, while the thickness of the shaving was increased by a light tap on the plane iron.
One of the chief objections to the wooden plane was its liability to wear and warp, so that it became necessary to straighten, or joint, the face. No such difficulty is encountered in the iron-bodied plane.
15. The Chisel. The chisel is one of the simplest forms of cutting tools. The size of the angle a depends on the kind of material to be cut.
Fig. 29. Cutting Angle of Chisel
A chisel for cutting wood must be sharpened to an angle of from 30 to 35 degrees.