29-08 to 10 Longerons, Side Skins & Side Ribs

The #30 holes common to the side skins and forward longerons are final drilled … I used a #30 reamer.


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The holes common to F-01470-L Side Skin, F-01485-L Center Section Side Plate and F-01464-L Upper Drag Fitting are also final drilled #30, enlarging them from the previously drilled #40.


Machine Countersinking

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There are a LOT of longeron holes to be machined!

I made a block of wood with a slot for the countersink bit pilot, and then used the drill press.

Needed a nice cup of coffee after that lot : )


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Then holes in the Center Section Side Plates are machined, being careful to follow the diagram detailing which holes to do!


Side Skin Dimples

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I marked the side skins to ensure I left out the correct holes when dimpling …


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… the DRDT2 made short work of the dimples …


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… apart from the curved bottom flanges, for which I used the squeezer.

I also used a reduced diameter female set for the curved sections.


Side Ribs

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Some of the side ribs have the edges “broken”.

The Cleaveland Edge Forming Tool didn’t fit all the way along these ribs …


… so I resorted to the Hand Seamer for these spots.

There were a couple of spots on the side skins, on the curved bottom flanges, which had the same issue.

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