Big Girtha Build Papering Fins Part 12

Thinned Carpenter's Wood Filler is brushed over the balsa on the open edges.

Sand down with 400 grit on a block and prime.

I'll be priming these fins off the main body.




Here's all four fins after sanding down the primer.

You can still see some balsa grain lines sanded through the primer.

The root edges (facing up) are sanded down more than the rest of the fin. Because I'm finishing the fins off the body tube, I wanted a little "open" paper at the root edge for better adhesion.