I normally separate the fins and apply CWF with a brush, but these fins are thin.
This fin stock is 1/16" thick. I decided to apply the CWF filler using a fingertip while the fins were still on the sheet.
The thinner coat should keep the chance of water warping low.
This picture shows the fins from an earlier MMX Hawkeye build, but the filler on this model was applied the same way.
The top of the board has a pebbled surface, the underside (setting on the balsa) is smooth.
The nose cone finish is smoother than the engine mount. The engine mount has the more typical "ribbed" 3D surfaces.
After testing the fit in the BT-5 main tube, I did sand some of the roughness down. Don't sand too much - I still maintained a good slip fit in the body tube.
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