Wednesday, April 20, 2016

Section: 16
Hours: 4

The rivet holes in the wing walk area of the top skin get counter sunk because it is two layers thick. The top skin counter sink results in close to a knife edge so you have to be careful with this operation. I used my variable speed electric drill and went slowly.

I trial fit the outer top wing skin panel- beginning to look like a wing!

The inner and outer wing skins overlap by about an inch and a half. The construction details specify that you feather the forward corner of the overlap to form a scarf joint. After much filing and sanding, here is the result.

The goal of the feathering is to have the skin edge match the thickness of the tank skin which will be butted next to it. Here is a scrap of aluminum the same thickness as the tank skin placed next to the scarf joint.

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