3-Flute Carbide Tipped Birds Mouth Bits
Build multi-sided cylinders and polygons using the same joinery used for centuries to build the masts of sailing ships. The bird's mouth joint only requires a cut on one edge of each stave, reducing your machining by half. But working faster isn't the only advantage. The shoulder within the joint provides a mechanical stop that keeps the staves from slipping around during glue-up and adds more glue surface as well. Three different bits cover 6-, 8-, 12- and 16-sided cylinders. While other companies offer similar bits, only Ultra-Shear builds bird's mouth bits with 3 flutes, instead of 2. You'll get smoother cuts and be able to work faster, too. Even tricky end-grain cuts machine flawlessly.
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Typical polygon miter joints require meticulous angle adjustments and spline reinforcement. But bird's mouth joinery is different. Just machine one edge of each stave and fit the square edge of one stave into the "bird's mouth" of the next. The square shoulder of the bird's mouth locks in the mating board at exactly the right angle for the number of sides you've chosen. On the 12- and 16-sided assemblies, you can leave the shoulders as a feature or smooth them out with a sander, hand plane or lathe.
But, equal-side cylinders are just the beginning. By making sections of different dimensions, you're no longer limited to just cylinders. You can make race-track ovals, elongated diamonds, squares with beveled corners and an unlimited number of other polygons. Start combining different wood species in the joining pieces and your creativity will really take off.
Ultra-Shear uses state-of-the-art CNC grinding equipment, the highest quality carbide, ultra-fine grinding wheels and skilled Northeast Ohio machinists to produce American-made router bits at extremely competitive prices. The days of paying extra for middleman markups are over. Buy direct from the manufacturer and pocket the savings. We’re confident you won’t find American-made Bird's Mouth Bits of the same design for less, but this week you can save even more.
| Country of Manufacture | United States |
|---|---|
| Flute | 3 Flute |
| Shank | 1/2" |
WARNING: Wood Dust created by Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection.