Monday, June 13, 2022

NACA air duct work

Made some fancy holes in the two aluminum side panels to match the profile of our small plastic NACA air ducts.

Hole cut for NACA duct

The two NACA ducts themselves were primed and painted white.

Ducts painted white

Had issues with the paint on one of the side panels.  After cutting the hole, the paint lifted and had a nice tear.  Looks like the primer didn't hold well in this area, so I had some fix work to do.  

Paint peeled up

The area was sanded and re-primed it with a different brand of metal primer (Polyfiber).  Tried to touch up the white paint with an airbrush, but it didn't come out very smooth, so I'll just sand and repaint it later when we paint some of the other unfinished parts, such as the cowl or turtledeck.   Hours: 15

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