Joinery

You need a dovetail bit (typically 14-degree or 8-degree undercut) for the angled tails, and a straight or spiral bit to clear the waste between pins. Infinity Tools offers a dovetail and box joint router bit set that bundles both profiles for complete hand-cut-style or jig-guided dovetails.

A lock miter bit is a single large-diameter bit that cuts a 45-degree interlocking miter profile. The male and female halves of the joint self-align during assembly, eliminating the need for splines or clamping pressure to hold corners square. It is commonly used on box corners, column wraps, and cabinet stiles.

Lock miter bits require precise bit height and fence position to produce a flush fit. Using a dedicated setup block eliminates trial-and-error: the block registers against the bit to set the exact height, and a test cut in scrap confirms fence position before you commit to finished stock. See the router bit setup jigs & blocks sized specifically for Infinity Tools lock miter bits.

The terms are often used interchangeably. Both describe interlocking rectangular projections cut on mating boards. Finger joints tend to have thinner, more numerous fingers, while box joints use wider, fewer fingers. Both maximize end-grain glue area for strong corner joints in boxes and drawers.

Most joinery profiles — dovetails, box joints, lock miters — are best cut on a router table because the bit height must be held constant and the workpiece needs solid fence support. A handheld router can cut simple dadoes and rabbets used in joinery, but the specialized profiles in this collection are designed for table-mounted routing.

A glue joint bit cuts an interlocking S-curve or stepped profile along the long grain of boards, mechanically aligning mating edges and increasing the glue surface area by roughly 50 percent compared to a plain butt joint. It is used when edge-gluing boards into tabletops or panels for superior joint strength and registration.

Use 1/2-inch shank bits for all joinery work. Joinery profiles tend to be large-diameter bits that put significant side loads on the collet. A 1/2-inch shank reduces runout, vibration, and deflection compared to 1/4-inch shank equivalents, producing tighter-fitting joints.

Yes. Shank diameter — 1/2 inch or 1/4 inch — is the only compatibility requirement; the collet accepts any bit with the matching shank regardless of brand. Confirm your router's collet size before ordering. Many Infinity Tools joinery bits are available in both shank sizes.

The Ultimate Joinery Router Bit Set is a strong starting point, covering the most common joint profiles in a single purchase. Reading through the Infinity Tools woodworking blog before your first cuts will also help you understand setup technique and feed rate.

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