I recommend trying the Elmer's wood filler!
I use DEFT. You can get it at Lowe's. Comes in a spray can and dries really quick.Since most of my builds have large fins/wings, it really speeds up the process. A couple of coats , lite sand and hit it with primer does the job.--View attachment 283022
DEFT - Does that work best on balsa as well as lite ply etc.? I never used it and I can see your point and how it would speed things up.
DEFT is my choice. And yes, very fast drying.
I should try it sometime. Do you apply after you attach the fins or before? Does it matter if it gets on the rest of the rocket?
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