Thursday, May 14, 2009

Deburred, dimpled, and countersunk VS

I've done all I can with the rudder until the new skin arrives, and I've done all I can with the HS until the replacement rib arrives (should be here tomorrow). Rather than starting the elevators, I decided to make some progress on the VS.

I started by using the old "soldering iron and a straight edge" trick to remove the vinyl from the rivet hole runs on the VS skin. This technique allows me to keep the protective plastic on as much of the skin as possible.

I deburred and then dimpled all of the holes (except for the holes that attach the fiberglass fairing). I used a hand squeezer on the edges and used the DRDT-2 on the inside holes.

Here's a shot of the DRDT-2. I don't have it bolted down yet, but this setup was good enough to dimple the VS skin. I'll probably have to build a workbench around it when I get to the wings. It's a really great tool. It saves me the trouble of swinging a mallet, it's much quieter than the average C-Frame, and it seems less likely to cause an "oops".

Once I was done with the skin, I deburred, dimpled, and countersunk the rear VS spar.

These holes had to be dimpled to install flush rivets:

These holes were countersunk to accept the dimpled skin. I seem to have enlarged the holes a little bit, but not so much that they are unusable. I just need to be careful when I squeeze these rivets.

When I was done with the rear spar, I worked on the rear spar reinforcement plate. I countersunk these holes to accept the dimpled holes in the spar.

To finish deburring this part I need to use the grinder and the Dremel. It's getting late and that would make too much noise, so I'll pick this up tomorrow.

Time spent: 3 hours (30 total)

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