COWL ATTACHMENT

On the real aircraft all around the fuselage and Cowl, they used DZUS Fasteners.

But this CARP Spitfire was built with Exposed Phillips Head Screws as can be seen in picture 1.

To hold the cowl on, I can't duplicate a true Dzus fastener system in a logical timely manner, so I am going to keep what's there.

I found a 4-40 machine screw that has the perfect head diameter and with the combination Roberson Slot head is the same size in diameter and height. I had to sand the small bump down with a diamond file to have the screw sit flush.

To attach the screws to the inside of the fuselage, I used Wood Mushroom Caps used in the furniture industry to hide screw heads. I drilled then tapped them to a 4-40 thread. To hold them in place I used HYSOL 9462 glue.

I used a total of 8 screws and Mushroom caps.

The total weight gain for this was part of the build was 12 grams (not counting the glue weight).