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45 Degree Lock Miter Router Bit


Create extremely strong, attractive miter joints that are, in most cases, stronger than the wood itself.

Perfect for cabinet framing, drawers, four sided planters, boxes, shadowboxes, columns, hollow beams, fine furniture framing and much, much more.

The interlocking 45°cut will help you produce extremely strong joints by providing a mechanical advantage of keeping the parts from shifting when they’re clamped up.
It has an optimal shear angle and extra-thick tips to give you the unmatched precision and maximum cutting life that will surely meet all your needs.


Create Strong Joints - Interlocking profiles and increased gluing surface area ensure your miters won’t come apart - no nailing required.

Saves You Time - Once the router bit is set up, cutting your profiles and locking them in place is simple and efficient - the profiles lock in at 90° and will not shift or slide out of square.

Durable - Heat resistant Teflon coating prevents the build up of sawdust, resin and pitch.

TimberLock™ 45° Lock Miter Router Bit - 1/2 Inch Shank - Valkyr Tools

Versatile - Can be used on all types of timbers - Softwoods, Hardwoods, MDF, Plywood and Particle Board.

Wide Application - From large carcass workpieces such as kitchen cabinets to small projects like drawers and keepsake boxes – the possibilities are yours to explore!


Material - Body: Tungsten Cobalt Alloy

Material - Blades: C3 Micro-Grain Tungsten Carbide

Cutting Angle: 45 degrees

Shank Diameter: 1/2 inch (12.7mm)

Cutting Length: 1/2 inch (12.7mm) and 3/4 inch (19mm)

Overall Length: 2-7/16 inch (62mm) and 2-5/8 inch (67mm)


Lock Miter bits are designed to create corner joints at a 90° angle where the apex of the joint is barely visible. This joint makes it easier to assemble boxes and larger carcass workpieces together and significantly increases joint strength by increasing the gluing surface area.

One Lock Miter bit piece is run vertically and the other horizontally against the fence. To set up, get scrap workpieces that are the same thickness and set the centre line of the bit with the centre line of the workpieces. Run both workpieces and fit together.

If you are regularly using that thickness of timber then save the scrap to make it quicker and easier to set up next time. These bits must be used in a router table with fence.