Made some good progress on the top skin today:

1. Countersunk the top/forward skin spacer strip.

2. Finished splicing all the power and ground wires for the cockpit lighting.

3. Clecoed on the top skin (every hole).

4. Began riveting on the the skin, starting top-center of the aft bulkhead (the instrument panel), and working alternately down the sides. I used solid rivets as long as I could reasonably reach inside the EFIS hole with a small, tungsten bucking bar. As soon as something behind the panel got in my way, I switched to CR3214-4-4 Cherry Max rivets, driving them with my awesome new Milwaukee M12 cordless blind-rivet tool. (I long ago decided that the rivets' price of $0.54 each is well worth it when I'm riveting alone. The tool makes setting them a total non-event.) By the end of the evening, I was almost done with riveting the aft bulkhead.