1. Measured for, and cut out, a cardboard template to help me finalize the design of a cover plate I'm going to make. The cabin heat knob is going to be mounted to the back side of the dividing wall between the pilot's right leg and the avionics "hell-hole." This will be a very convenient location for the pilot to use the control, but it was going to be a magnificent P.I.T.A. to install, and nearly impossible to easily replace or service. So I came up with the idea to cut a 7/16" slot in the wall, and install the control cable in the slot. But since that would look bad and also not be very structurally strong, I will put a screw-on cover plate over the slot, and mount the control cable to that. This way, if I ever need to service or replace the cabin heat cable (or even just remove the dividing wall for some reason), I can do it easily by removing only four screws. 2. Used the template to cut out the plate from a piece of scrap 0.040" aluminum. 3. Drilled a 7/16" hole in the center of the plate. 4. Located and marked where the screw holes will go in the plate. Once these are drilled, I'll use the plate as a drill guide to transfer the holes into the dividing wall, then install nutplates in the wall.