Estes Space Twister #7258, Part 6, Primer & Fin Gluing

With the engine mount glued in,

The body tube got a shot of filler/primer and sanding to surface. The three fin position lines were scraped for a stronger root edge glue bond.

The picture on the right shows the fins glued in place.

Fillets were interesting - it's hard to smooth out a fillet on the inside top under the spin tab.

Look close and you can still see some balsa grain after the first shot of gloss white. There is also some roughness where the spin tab is glued on. 

I rubbed some CWF filler into the balsa pores. If you do this after spaying paint, used very little  filler and remove as much of the filler as you can. Sanding filler this late in the game - the filler dries harder than the balsa. You don't want to be re-sanding more than you have to. Sometimes the filler are will show after the final paint is dried. 

Here's the model after light sanding, ready for the second coat of gloss white.