Update 6
Now begins the work of cutting the tang hole in the keyhole guard. I mark a centerline down the face of the guard and mark the width of the tang at the guard and then begin drilling pilot holes (3/32) along the line.
I then go back and drill the hole closer to final opening size needed. Then I used an end mill in my drill press to cut out the webbing between the holes.
Then I begin the long slow process of filing the hole to final size for the tang. I have a file guide the I made that can hold the 2.5 keyhole block.
Here is the first test fit.
Once it is close to final fit, I use my press fit jig to force the fit so I can find the high spots to file off.
Here are a couple shots of the final fit.
The next task is to cut out the space for the tang from the handle block. Here are two pictures of the marked up handle block.
Next using the band saw I cut the center out of the upper part of the handle block.
Next I use the drill press to bore a hole each side of the tang slot.
Next I use a 6 long ¼end mill to cut out the material between the two holes.
Then I check the fit of the tang in the handle and then the fit of the knife, keyhole and handle.
Next time I will begin shaping the front end of the guard and epoxy everything together.