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Infinity Tools 1/2" Shank Precision Twist Slot Cutting Router Bit

Infinity Tools 1/2" Shank Precision Twist Slot Cutting Router Bit - Main image
$62.03 $179.8 In stock

Category: Router Bits

Infinity Tools Precision Twist Adjustable Slot-Cutting Router Bits – One Bit, Countless Slot Widths

Infinity Tools Precision Twist Slot-Cutting Router Bits put a new spin on the traditional slot cutter. Instead of stacking cutters and experimenting with easy-to-lose shims, Precision Twist bits allow you to quickly dial in the exact slot width you need with a simple turn of the adjustment nut.

Choose Item 61-512 for infinitely adjustable slot widths from 1/8" to 1/4", or Item 61-513 for widths from 1/4" to 1/2". Fine adjustments can be made in precise .001" increments, making it easy to achieve the perfect fit for plywood, hardwood, MDF, and other woodworking materials. Or save money when you buy both and always have the right bit for the job. 

Dial In the Perfect Slot Width

Material thickness doesn't always match its advertised dimensions. Plywood is a perfect example—a sheet sold as 1/4" or 1/2" may measure slightly thinner. With a Precision Twist Slot-Cutting Router Bit, you can measure your material and adjust the cutter to create a slot that matches its actual thickness for tight-fitting dadoes, grooves, rabbets, and other woodworking joinery.

Best of all, there are no shims to stack, measure, or lose. Simply turn the adjustment nut to increase or decrease the cutting width until you've dialed in exactly the dimension your project requires.

Premium Four-Cutter Carbide Design

Each Precision Twist Slot-Cutting Router Bit features four premium carbide cutting tips for the clean cuts, long cutting life, and dependable performance you expect from Infinity Cutting Tools. The four-cutter design produces smooth, efficient cuts in a wide range of woodworking materials.

Each bit also includes a guide bearing that limits the depth of cut to 1/2", making setup quick and repeatable.

Designed for Router Tables and CNC Machines

Precision Twist bits feature a 1/2" shank and a 2" overall cutting diameter. While they can be used with a compatible hand-held router, their adjustability and cutting diameter make them ideally suited for use in a router table or CNC router.

For safe, controlled cutting, we recommend a maximum operating speed of 16,000 RPM using a variable-speed router or router speed controller.

Precision Twist Slot-Cutting Router Bit Specifications

61-512 Cutting Width 1/8" – 1/4"
61-513 Cutting Width 1/4" – 1/2"
Fine Adjustment .001" increments
Cutting Diameter 2"
Maximum Depth of Cut 1/2"
Shank 1/2"
Cutters Four premium carbide cutting tips
Maximum Speed 16,000 RPM
Recommended Use Router tables, CNC machines, and compatible hand-held routers
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

John ★★★★★

The twist mechanism makes switching between slot widths quick and repeatable, so I was able to finish a whole shelving project in one session. Cuts are clean with minimal tearout even on plywood.

Christopher ★★★★★

Spent an afternoon dialing in different slot widths without swapping bits, and the twist mechanism held its setting perfectly through a dozen cuts. The 1/2" shank ran true with zero chatter in my table router. One bit genuinely replaced three of my old fixed cutters.

Amelia Y. ★★★★★

Finally, a slot cutter that lets me dial in exact widths without swapping bits. The twist adjustment mechanism on this one feels solid and precise, and it cut cleanly through maple plywood on my first test.