Straight and Spiral Router Bits for Foam



The cutting edges of these bits have a shallow angle to carve foam quickly and accurately. With a square cut style, they create slots, pockets, and edges. These bits are good for plunge cutting, letting you cut directly into the workpiece from above. They do not have a pilot, so guide your router along a straight edge when hand routing to make accurate cuts.
High-speed steel bits are for general purpose use. They can be used with hand tools, router tables, and CNC machines.
Use carbide bits for longer tool life and faster cutting speeds than high-speed steel. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the bit from breaking. Ceramic-coated carbide bits have a coating that increases the hardness of the bits and protects them from high heat, making them last about 2.5 times longer than uncoated bits.
V flutes are evenly balanced to create a smooth finish when using a hand router.
Bits with spiral flutes leave a smoother finish than V-flute bits and make plunge cuts more easily. Bits with upward chip removal lift chips up for applications that require a smooth finish on the bottom edge of the cut. Securely clamp the workpiece before routing to prevent lifting. Bits with downward chip removal push chips down for applications that require a smooth finish on the cut's top edge.
For technical drawings and 3-D models, click on a part number.
Cutting Dia. | Lg. of Cut | Shank Dia. | Overall Lg. | Number of Flutes | Cut Type | For Tool Type | Each | |
Uncoated High-Speed Steel | ||||||||
---|---|---|---|---|---|---|---|---|
V Flutes | ||||||||
1/4" | 3/4" | 1/4" | 2 1/8" | 2 | Plunge | CNC Machine, Hand Router, Router Table | 0000000 | 000000 |
1/4" | 1" | 1/4" | 3 1/4" | 2 | Plunge | CNC Machine, Hand Router, Router Table | 0000000 | 00000 |
1/4" | 1" | 1/2" | 2 1/2" | 2 | Plunge | CNC Machine, Hand Router, Router Table | 0000000 | 00000 |
3/8" | 1" | 3/8" | 2 1/2" | 2 | Plunge | CNC Machine, Hand Router, Router Table | 0000000 | 00000 |
1/2" | 1 1/4" | 1/2" | 2 3/4" | 2 | Plunge | CNC Machine, Hand Router, Router Table | 0000000 | 00000 |
Uncoated Carbide | ||||||||
Spiral Flutes with Upward Chip Removal | ||||||||
1/8" | 1 1/8" | 1/4" | 2 1/2" | 2 | Plunge | CNC Machine | 0000000 | 00000 |
3/16" | 1 5/8" | 3/16" | 4" | 2 | Plunge | CNC Machine | 0000000 | 00000 |
1/4" | 2 1/4" | 1/4" | 4" | 2 | Plunge | CNC Machine | 0000000 | 00000 |
1/4" | 3" | 1/4" | 6" | 2 | Plunge | CNC Machine | 00000000 | 000000 |
3/8" | 4" | 3/8" | 6" | 2 | Plunge | CNC Machine | 00000000 | 000000 |
Spiral Flutes with Downward Chip Removal | ||||||||
1/8" | 1 1/16" | 1/8" | 3" | 2 | Plunge | CNC Machine | 0000000 | 00000 |
1/4" | 2 1/4" | 1/4" | 4" | 2 | Plunge | CNC Machine | 0000000 | 00000 |
Ceramic-Coated Carbide | ||||||||
Spiral Flutes with Upward Chip Removal | ||||||||
1/8" | 1 1/8" | 1/4" | 2 1/2" | 2 | Plunge | CNC Machine | 00000000 | 00000 |
1/4" | 2 1/4" | 1/4" | 4" | 2 | Plunge | CNC Machine | 00000000 | 00000 |
Spiral Flutes with Downward Chip Removal | ||||||||
1/8" | 1 1/8" | 1/4" | 2 1/2" | 2 | Plunge | CNC Machine | 00000000 | 00000 |
1/4" | 2 1/4" | 1/4" | 4" | 2 | Plunge | CNC Machine | 00000000 | 00000 |
Trimming Router Bits

Cut layers of material flush to one another or make cuts along a template.
Use carbide bits for longer tool life and faster cutting speeds than high-speed steel. Ball-bearing pilots guide the bit for accurate cuts and produce less friction than solid pilots for smoother operation.
Pilot location describes the position of the pilot when the bit is used for hand routing. The pilot location is reversed when using the bit with a router table. Bottom-pilot bits trim material from an upper layer of the workpiece so that it is flush with the layer below. In addition to flush trimming, they can be used to cut along a template placed below the workpiece.
Bits with spiral flutes leave a smoother finish than straight-flute bits and make plunge cuts more easily (for plunge-cutting bits).

Cutting Dia. | Lg. of Cut | Shank Dia. | Overall Lg. | Pilot Type | Ball-Bearing Pilot Dia. | Number of Flutes | Flute Type | For Tool Type | For Use On | Each | |
Bottom Pilot | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1/4" | 5/8" | 1/4" | 2 3/8" | Ball Bearing | 1/4" | 2 | Spiral | Hand Router, Router Table | Wood, Particleboard, Plywood, Aluminum, Plastic Laminate, Soft Plastic, Foam, Hard Plastic, Plastic Composites | 0000000 | 000000 |
1/4" | 3/4" | 1/4" | 3" | Ball Bearing | 1/4" | 2 | Spiral | Hand Router, Router Table | Wood, Particleboard, Plywood, Plastic Laminate, Soft Plastic, Foam, Hard Plastic, Plastic Composites | 0000000 | 00000 |
1/2" | 1 1/8" | 1/2" | 4" | Ball Bearing | 1/2" | 2 | Spiral | Hand Router, Router Table | Wood, Particleboard, Plywood, Plastic Laminate, Soft Plastic, Foam, Hard Plastic, Plastic Composites | 0000000 | 000000 |
Engraving Router Bits


A fine-point diamond tip precisely cuts lettering, numbering, and grade marks in materials such as aluminum, steel, copper, and granite. These bits also work on plastics such as polyethylene, polycarbonate, and vinyl. They’re spring loaded to apply constant pressure to the tip.
Use 90° cut angle tips (sold separately) to engrave the finest details.
For technical drawings and 3-D models, click on a part number.
Router Bits | Replacement 120° Cut Angle Tips | 90° Cut Angle Tips | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cutting Dia. | Lg. of Cut | Cut Angle | Shank Dia. | Overall Lg. | Flute Type | For Tool Type | For Use On | Each | Each | Each | |||
Uncoated Diamond-Tipped Stainless Steel | |||||||||||||
0.005" | 1/32" | 120° | 1/4" | 3 3/4" | Fluteless | CNC Machine | Aluminum, Steel, Copper, Granite, Glass, Foam, Plastic, Hard Plastic, Wood | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 000000 |
0.005" | 1/32" | 120° | 1/2" | 3 3/4" | Fluteless | CNC Machine | Aluminum, Steel, Copper, Granite, Glass, Foam, Plastic, Hard Plastic, Wood | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |