Countersinking F-1204 Center Channel

Today a little progress was made in the shop … finished up the deburring and smoothing of edges on the remaining fuselage ribs and the center channel’s aft bulkhead. The last thing remaining to do to the F-1204 center channel before priming and paint was to machine countersink eight rivet holes for nutplates which attach onto the center channel’s forward bulkhead.

                                      Machine countersinking one of the eight rivet holes which will secure four
                                       nutplates onto the center channel’s forward bulkhead with flush rivets.

The center channel’s aft bulkhead requires some countersinking as well, so will try to finish that off tomorrow and hopefully begin dimpling ribs and parts which will contact the side skins.