Infinity Tools 1/2" Shank Box Joint Router Bit
The Infinity Tools 1/2" Shank Box Joint Router Bit makes it easy to cut strong, perfectly spaced box joints (also called finger joints) on your router table. Outfitted with five 5/32"-kerf micro-grain carbide slot cutters and three interchangeable bearings, this set produces crisp interlocking fingers for drawers, boxes, crates, and casework — one of the most useful additions to any box joint and joinery setup.
Why woodworkers love box joints
The interlocking fingers of a well-made box joint are both beautiful and remarkably strong, thanks to the large amount of long-grain glue surface. You'll find them on everything from fine jewelry boxes and kitchen drawers to shop crates and storage bins. They're quick to cut, easy to design, and built to last.
Built for accuracy and long life
The five micro-grain carbide-tipped slot cutters hold their edge far longer than standard tooling. The 1/2" machined-steel arbor lets you rout fingers in stock up to 1-9/16" tall in a single pass, or up to 3-1/8" tall in two passes. Three included bearings let you set cutting depths of 1/4", 3/8", and 1/2" with confidence.
Key specifications
- Shank: 1/2"
- Cutter diameter: 1-7/8"
- Cutter height: 1-13/32"
- Joint size: 5/16" fingers (5 x 5/32" kerf cutters)
- Bearings included: BR-105 (1/2" stock), BR-116 (3/8" stock), BR-118 (1/4" stock)
- Max single-pass height: 1-9/16" (up to 3-1/8" in two passes)
Pairs well with
Run this bit in a router table package for safe, repeatable joints, and explore more joinery router bits such as dovetail and finger-joint profiles. For drawer and cabinet builds, see our complete cabinetry and joinery collection.
Quick to make and uncomplicated to design, when precisely cut, fit, and glued the humble box joint forms a lasting hold that also catches the eye. Our Infinity brand Box Joint Router Bit lets you route combs in stock up to 1-9/16th" tall in a single pass or up to 3-1/8" tall in two passes.
The interlocking fingers of a well made box joint are a thing of reserved dignity. You will see them on countless items throughout your day. From high end kitchen drawers and jewelry boxes, to simple crates and containers, they are a stalwart figure in the world of joinery. Quick to make and uncomplicated to design, when precisely cut, fit, and glued the humble box joint forms a lasting hold that also catches the eye.
Our Infinity brand Box Joint Router Bit is designed to do this time-tested method of joinery justice. Made with micro-grain carbide tips, the five 5/32" kerf slot cutters will hold their edge longer than you would've ever thought possible. The 1/2" shank arbor lets you route combs in stock up to 1-9/16th" tall in a single pass or up to 3-1/8" tall in two passes. And, with three bearings included in the set, you'll be able to cut at depths of 1/4", 3/8", and 1/2" deep with absolute confidence.
Setup is fairly simple, but important to get right. Two sides of the box will be set to leave an open notch at the top. In this case in 1/4" stock. A backer board is used to avoid tearout on the back of your piece, and the same cut should be made on both ends of these boards. Note that clamping in place is strongly recommended to keep the cuts accurate.
The cut on the mating two sides is set up to leave a full tongue on top, so the two pieces will mate exactly. Again, this same cut will happen on both ends of these pieces. Sometimes that piece is very small, making the clamping all the more important.
As mentiones, the bit is shipped with three bearings to all cuts at depths of 1/2" (left), 3/8" (middle), and 1/4" (right) deep with absolute confidence. Bearing changes can easily be made from the top while the bit is still in the router table.
Need to make a taller box? With a proper bit set-up you can make a 3-1/8" tall box in two passes. For gifts, for collections for hobbies or your own home business, box joints are quick, strong and beautiful. A Box Joint Router Bit belongs in every shop.
