The weather was nice today so I added a layer of fiberglass to the position light mount on the wingtip.
I also picked up some 1.5″ electrical conduit to use for exhaust pipes. Since they’re galvanized and welding zinc is bad for my health, I dipped the pipes into some phosphoric acid. The phosphoric acid will remove the zinc without damaging the steel base metal.

The acid has already started to dull the zinc, but it will take a few days to get back to bare steel.
I finished the second set of aluminum wedge shims for the fuel line too.