Tenon making jig

I came across the idea for this jig on a website. It begins with a simple piece of plywood, I used some of the 9mm ply I had left over from the toolbox project. 

You cut a rectangle, in this case 380mm by 280mm and remove the corner of the edge that will run along the fence of the router table.

Then you glue and screw another smaller piece at right-angles to the fence edge and add the toggle clamps.

I've added a small ply platform under each clamp to raise the lever point of the clamps.

I haven't tried it on my router table yet, but the wood for the blanket box is coming tomorrow and I wanted to be ready!