The Infinity Tools Precision Twist Slot-Cutting Router Bits are a new spin on a traditional slot cutter. These are different from your usual slot cutting router bits because they allow for infinite adjustability from 1/8" to 1/4" (Item 61-512) or from 1/4" to 1/2" (Item 61-513) cutter kerfs with the twist of the adjusting nut on the top of the bit. With these router bits, you'll always have the perfect size slot cutter for the job and will never need to mess with those tiny shims on traditional stacked slot-cutting router bits.
Adjusting the Precision Twist slot cutters is easy. First, loosen the top nut on the bit with the included wrench. Second, turn the knurled knob on the top of the bit to adjust the spacing between the pair of cutters. The bits are etched with one-eighth increment hash marks around their circumference to help dial in the desired cutting width.
Each hash mark represents 0.004" of adjustment. One full revolution of the knob adjusts the overall cutter width 1/64". Tighten the lock nut back down and you are ready to put the bit to use.
There are no clicks or detents in the adjustment mechanism. This enables infinite adjustability between the minimum and maximum cutting widths of the router bits. This is handy for any other situations that come up in custom woodworking, such as creating an absolutely perfect-fitting groove for undersized plywood.
Each of these bits includes a bearing that limits the depth of cut to 1/2". With a 1/2" shank and an overall diameter of 2", we recommend a maximum speed of 16,000 rpm with your variable-speed router or router speed controller. While these bits can be used in a hand-held router, they're ideally suited for use in a router table or CNC machine. Each of these bits features four carbide cutting tips of the same high quality and long life you would expect from Infinity Cutting Tools.
