Variable Helix Solid Carbide Up Cut Spiral Router Bit

American Made Quality at Factory Direct Pricing!

When cutting mortise and tenon joints with a router, you want on-dimension performance, chatter-free surfaces, smooth operation and long tool life. Typical spiral router bits check a lot of those boxes, but can self-feed when plunging and often chatter when there's only material on one side (like on long tenons). The new Ultra-Shear Variable Helix Joinery Bits plunge more reliably because there's very little angle to the spiral at the tip. The helix angle increases moving toward the shank, increasing chip removal and delivering smooth surfaces in both enclosed cuts (mortises) and single-sided cuts (tenons). 

After our initial testing with both Multi-Router and PantoRouter joinery machines, we decided to offer the Variable Helix Joinery Bits in the sizes most often needed when using these machines and in extra-long cut lengths you won't find in other brands of spiral router bits. Imagine machining a 2-1/2" long tenon with virtually no chatter and dimensional consistency measured in thousandths.

But..you don't have to have an expensive joinery machine to take advantage of these bits. If you're mortising with a plunge router and a fence system, the controlled feed and superb chip clearance will out-perform any other spiral bit on the market. 

Buy direct from the manufacturer and pocket the savings. We’re confident you won’t find an American-made bit of the same design for less. 

Do you have a router bit in mind you would like to see in the Ultra-Shear line-up? Tell us about it in an email to mailroom@woodpeck.com.