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.
Lock miter router setup.
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.
That is the fence would never be set that far back.
First a diagram the numbers shown are for the infinity lock miter jr.
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.
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.
Check out our guide to learn the r.
There are two sizes of the lock miter master jig.
Your goal is to have a and b equal to each other.
Router bit item 55 502.
Set the initial router bit height by using a piece of your stock as a reference.
Align the midpoint of the lock miter cut with the centerline of the workpiece.
A lock miter router bit cuts a 45 degree miter with a tongue and groove.
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.
45 lock miter router bit instructions set bit height and fence depth 1.
Simple steps for airtight joints.
You need to get both the fence position and the bit height exactly right in order for this joint to work.
A lock miter bit is one of the most challenging router bits to set up.
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.