Lock miter joint plywood. The mating piece is routed on edge with its inside face touching the fence. Lock miters can help you make legs and other posts. Mdo is basically veneer core plywood with mdf on the outside. Its my opinion jig or no jig the real key to this joint is that once the machine set up is done you machine your parts and make sure you dont have to come back to a second machine set up.
The lock miter is such a specific joint. Due to the laminated nature of plywood a traditional lock miter joint is not the ideal method of joinery for this material because the fingered keys that the joint relies on for stability are. They can also be used with plywood to assemble cases with seamless corners. If done right ensures alignment and good glue strength.
I spent hours trying to make the posts but couldnt get the lock miters right. To make this joint youll rout one piece horizontally with its inner face resting against the tabletop. C3 micro grain tungsten carbide blades high quality alloy steel bodies with anti kickback design. Lock miter the lock miter bit makes clean self aligning mitered corners in hardwood softwood and plywood.
The plan was to build each post with four pieces of mdo joined with lock miters. 1 buying a lock miter router bit and using a lock miter joint. Lock mitre joint on 34 plywood. The lock miter master online manual shows these variations.
The bit must be used in a router table with a straight squared fence. 14 inch shank 45 degree lock miter router bit 2 inches in blade diameter. Freud lock miter router bit. Choose your bit based on the thickness of the material you plan to use following the catalog specs.
I had never made these joints before and knew the router setup would be tedious but i thought i could make it work. Best results are obtained with minimum clearance. It makes setup of any brand of lock miter bit a breeze whether you are using a standard lock miter joint a lock miter joint in stock of un equal thickness or an off set lock miter joint. Bestgle 3pcs 14 shank lock miter glue joint router bit 45 degree woodworking cutter set for mdf plywood carpenter woodworking tools 2199 21.
Locking miter on the table. Requires buying a 50 router bit and isnt easy to execute i think it would require routing a 1x3 board vertically on its edge. Mainly used for joining wood edge to edge it will provide a durable joint.