Brief Description: Dimpled Top Skin/Modified Pedal Bracket
I dimpled all of the holes in the forward ribs and the forward top skin, using the pneumatic squeezer and the C-frame dimpler. The three holes in the instrument subpanel that had the spacers riveted in place, had to be countersunk. I chucked a #30 countersink bit into the angle drill and countersunk the holes for the rudder pedal bracket. This was then riveted in place with the pneumatic squeezer. I tried to fit the firewall recess in place, but found that the bracket's flange was in the way. I measured that approximately 1 1/2" had to be trimmed from the flange and drilled a pilot hole in the corner of the flange. Lines were drawn and the corner was cut using a cut-off wheel in the Dremel. The edges were cleaned up with the die grinder and files. The firewall recess was placed into position and the pilot holes were back-drilled up to proper size, either #40 or #30, depending upon the location. All holes were deburred.
Countersunk holes because of spacer underneath
The rivet holes countersunk for the rudder pedal bracket
