Fiberglass on the Wingtip – Jared and Tabitha's Bearhawk Construction Log

The weather was nice today so I added a layer of fiberglass to the position light mount on the wingtip.

Bearhawk Wingtip Light — The position light mount has its first layer of fiberglass.

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.

Phosphoric Acid Bath — The ziplock bag is just there to displace some acid and bring the level up higher.

Removing Zinc Plating with Phosphoric Acid — 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.

Bulkhead Fuel Fitting Shim — These aluminum wedges will eliminate a low spot in the fuel line where it passes under the front door jamb.

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