I wanted to use a 1/4" diameter router bit with a top mounted pattern bearing but couldn't find one to save my life. All I could find was bits with the bearing on the bottom or both top and bottom but not top only. Weird. So I had to settle for using a 1/2" diameter bit with the bearing on top. It worked, but the inside corners are a little more rounded than I'd like. Later on after I get everything glued together, I'll try using a wood chisel to fix that. The bit I used was a little too long so I had to add more thickness to the arm pit template.
Next, the mounting holes for the shoulders. Not wanting to have to remake the shoulder hubs and pipe attachments, I needed to drill the holes to match the ones on the old legs. To do this, I had to cut open the old legs so I could use them as a template. No going back now.
Next weekend I might be ready to start gluing the pieces together. Will carefully examine everything I've done thus far. Don't want to forget anything.