single-angle milling cutters (figure 29) or double-angle milling cutters.

The single-angle cutter contains side-cutting teeth on the flat side of the

cutter. The angle of the right or left cutter edge is usually 30, 45, or

60. Double-angle cutters have included the angles of 45, 60, and 90.

FIGURE 29.

SINGLE-ANGLE MILLING CUTTERS.

(i)

Concave and convex milling

cutters (figure 30 on the following page) are formed tooth cutters shaped to

produce concave and convex contours of one-half circle or less. The size of

the cutter is specified by the diameter of the circular form the cutter

produces.

(j)

(figure 30) is a formed tooth cutter used for milling rounded corners on

workpieces up to and including one-quarter of a circle.

The size of a

cutter is specified by the radius of the circular form the cutter produces,

as with concave and convex cutters.