Here is the completed 1/16 mouth joint ready for peening.
I set the body on the assembled sole and mark out the front tails. I am careful
to use the tail angles and spacing that were used before on the rear sole plate.
At this stage, I check all the joints. Any rocking or large gaps must be
resolved. I back file all of the pins and tails for the double-splayed effect.
The body is now ready for peening to the sole.
The bridge is made next. A piece of 1-1/4 x 3/16 plate is marked on each side
to the proper internal body width. Then I place a 3/16 mark outside each of the
previous marks. This will compensate for the body plate width and the necessary
proud material for peening. There will be two tenons per side. These are 3/16
square. I cut the two tenons per side and file out the waste.
I transfer the tenons to the body using a scribe to mark the 20-degree bed angle
in the proper location. Then the width of the iron is laid in to create a datum
point for the wedge angle. The wedge will seat at 8-degrees.
Once the tenon hole locations have been marked, I drill two holes per side. The
hole must be smaller than the tenon width. I use a square needle file to
transform the round hole into a square hole. I insure that the tenons easily
drop into the square holes.