Fig. 2727.
Fig. 2728.
Planes are also made with the sole and the cutting edge of the blade made to conform to the shape of the work. Thus [Fig. 2727] represents a rabbeting plane, and [Fig. 2728] a side rabbet plane. The latter is, however, very seldom used, but is especially useful in planing hard wood cogs fitted to iron wheels, or the teeth of wheel patterns or other similar work. For ordinary use, it is sufficient to have two, a 3⁄4 and a 11⁄4 inch, and two or three having a flat sole for flat bottom grooves.
What is known as a core box plane has its sole at an angle of 90°, or a right angle; the principle of its action is that in a semicircle the angle is that of 90°.
Fig. 2729.