I recently got some Deft sanding sealer (must be GREAT stuff, since it is so ... so ... uh ... aromatic) and put it on some pine.

Two of my sons are cub scouts and are going to put their cars in the January Pinewood Derby.

My questions are:

1) How many coats
2) Do you sand between the coats, or do you sand after multiple-coat applications
3) Do you primer over the sanding sealer or straight to paint (my guess is primer it)

I know this is a basic question but it has been decades since I last used sanding sealer and I wanted to get a sense of the prevailing conventional wisdom.

I know that pine is not balsa, but my guess is that for this phase, you would treat balsa the same as pine (since it is a fairly soft wood).

Greg