This door skin is really a simple panel , just getting all the braking lines in the panel is key. The panel has a very minor very low crown from the front of the skin (hinge area) to the rear (striker area) .
I am still tooling up for the doors I am making repair panels for but I had the oppertunity to get some information of a rusted but straight door skin.
I started by making a few shape gauges.
those will help me track the shape of the placement of the joggles and breaking lines. The one in the center of the door will only track the shape of the outer skin when I have it in place on the door bucket.
In this next photo, I have masking paper template of the door skin and I am tracking the lines. Notice the magnets holding the paper in place. I also use a spring loaded punch to pierce the paper and leave tiny pin punches in the skin as timing marks so I can back track as I remove and replace the paper template.
Now most of the information is transfered on to the template I can start tranfering on to my sheet metal.
Now I can start cutting out the perameter of the door skin but first adding 5/8 of an inch for the flange that will finaly hold the door inplace.
Fast forward the door skin has most of the reveals and I will post more as I get it closer to a ready to install door skin....