More progress

Well today we finished all the prep work on the longerons.  Way back we talked about bending and shaping the longerons but today we focused on machine countersinking and then prepping and priming them.  For those who haven't been reading our blog since we started this project all those years ago, machine countersinking is done to allow the rivets to be flush with the skin of the plane.  Dimpling is basically doing the same thing except that, instead of removing material to make room for the head of the rivet, you just bend the material.  You machine countersink when the material is too thick to bend and you dimple when the material is too thin to machine countersink.

In any case, we're ready to begin final assembly on the fuselage.  It will be nice to see some parts going in their final location.