Archive for the ‘Modifications’ Category

Tonight I wanted to finish up the Tunnel Access Panels, therefore I riveted the twelve anchor nuts onto the reinforcing plate before I clecoed it to the inside of the tunnel wall.  Finally I riveted the twenty-one rivets into the sides and the top around the reinforcing plate.

Today I started the installation on the Tunnel Access Panels by first clecoing the reinforcing plate bottom row onto the outside of the tunnel.  I final-drilled the #40 holes around the perimeter of the plate and clecoed each hole as I drilled.  Next I drilled the four corner holes with a #10 drill bit and then removed the reinforcing plate. 

I then clecoed the cover plate onto the tunnel wall using the four corner holes and marked a cut line around the perimeter of the cover plate.  I removed the cover plate and used my step drill to drill out the four corners in the tunnel wall. 

I then used my Dremel Tool to carefully cut a line from one corner to another following the cut line I had created earlier.  I carefully cleaned up the corners and edges until the cover plates fit perfectly. I final-drilled the twenty-four anchor nut attach holes with a #40 drill bit, before finally countersinking and deburring all the holes.