You need to get both the fence position and the bit height exactly right in order for this joint to work.
Lock miter router setup.
First a diagram the numbers shown are for the infinity lock miter jr.
Router bit item 55 502.
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.
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.
Simple steps for airtight joints.
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.
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.
Set the approximate fence depth by visually.
Check out our guide to learn the r.
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.
With the lock miter master jig you can set up a lock miter bit in no time at all.
Align the midpoint of the lock miter cut with the centerline of the workpiece.
On the thread mentioned above there were many good suggestions for setting up the lock miter.
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.
That is the fence would never be set that far back.
A lock miter bit is one of the most challenging router bits to set up.
There are two sizes of the lock miter master jig.