Lock Miter Router Setup

Note that the markings are for reference only and particularly in the case of the fence location don t precisely represent the actual set up.

Lock miter router setup.

A lock miter router bit cuts a 45 degree miter with a tongue and groove. With the lock miter master jig you can set up a lock miter bit in no time at all. When correctly cut the parts go together at a perfect 90 degree angle and the interlocking tongues and grooves make for lots of mechanical strength and glue surface area. Once it does it delivers a very strong and elegant miter joint that is virtually impossible to detect from the outside and offers the additional advantage of being self.

That is the fence would never be set that far back. Check out our guide to learn the r. A lock miter bit is one of the most challenging router bits to set up. You need to get both the fence position and the bit height exactly right in order for this joint to work.

Your goal is to have a and b equal to each other. Simple steps for airtight joints. First a diagram the numbers shown are for the infinity lock miter jr. Router bit item 55 502.

In woodworking circles the lock miter is often referred to as a trick bit by a feat of geometric genius the bit creates both halves of a mitered corner complete with interlocking tongues and grooves with a single router table setup. Align the midpoint of the lock miter cut with the centerline of the workpiece. One is for smaller router bits cutting 3 8 to 3 4 thick stock the other is for the larger bits cutting 5 8 to 1 1 8 thick stock. In an effort to not completely derail that thread i thought it would make sense to have a dedicated thread to discuss tips and tricks to setting up a lock miter joint on the router table.

Set the initial router bit height by using a piece of your stock as a reference. There are two sizes of the lock miter master jig.