Lew, yes you can "hot" coat the varnish if you time it right....trick is to wait long enough to avoid runs, but not so long that the initial coat hardens to the point that adhesion is reduced....usually this is anywhere from 2-6 hours after the initial coat...good luck.

: I just put a coat of varnish on my fiancee's Guillemot. The instructions say
: it dries to the touch the in 2 hours and can be sanded in 18. Can I skip
: the sanding part (and some time) by adding another coat in the next couple
: of hours? Thanks in advance for your help..

: Lew (working from his fiancee's computer)