450 Modern Metalworking Copyright Goodheart-Willcox Co., Inc. A fly cutter, r r Figure 26-20, is a single-point cutting tool used for face milling. Fly cutters are inexpensive to make but are inefficient because only a single-point tool does the cutting. Arbor Milling Cutters An arbor milling cutter is designed to fit on an arbor.r r The more commonly used arbor milling cutters fall into one of the following categories (Figure 26-21): • Plain milling cutters have teeth located around their circumference. Plain milling cutters less than 3/4″ (19 mm) are made with straight teeth. Wider ″ plain cutters, called slab cutters, are made with heli- cal teeth designed to cut with a shearing action. This reduces the tendency for the cutter to chatter. • Side milling cutters have cutting edges located on the circumference and on one or both sides. They are made in solid form or with inserted teeth. Goodheart-Willcox Publisher Figure 26-20. The fly cutter is a single-point cutting tool used for face milling. The construction of the side chip clearance slitting saw f h id hi l allows it to be used for deep slotting applications Light-duty plain milling cutter Heavy-duty plain milling cutter Helical indexable insert plain milling cutter Plain-side milling cutter Staggered-tooth indexable insert side milling cutter Half-side plain milling cutters Single-angle cutter with coating Single-angle milling cutter Double-angle milling cutter Concave milling cutter Convex milling cutters Convex rounding milling cutter Gear cutter with coating Plain metal slitting saw for slotting and cutoff operations KEO Cutters KEO Cutters Lovejoy Tool Company, Inc. Standard Tool Company Lovejoy Tool Company, Inc. Standard Tool Company KEO Cutters KEO Cutters KEO Cutters MFGoto.ro/Shutterstock.com KEO Cutters KEO Cutters Standard Tool Company Goodheart-Willcox Publisher Figure 26-21. Types of milling cutters.