Originally Posted by Bodge
I'm afraid I mess with it...
What length of nap is appropriate for my brush?
3/4" length is about right.
I dip my 2" wide natural bristle brush, scrape both sides of the brush off on the slip of my pyrex lab beaker that I use for gluing (reusable, glue doesn't stick to glass), and that's the amount of glue I carry over to the substrate. I immediately spread it thin.
That's enough glue for about 5 square inches of coverage.
I spread it as long as the brush moves smoothly...once the brush starts to "chatter" against the surface, I dip my brush for more glue.
I use Zodiac Z7098 glue. Polymarine / Bostik 2402 don't spread as easily.
This is all very tough stuff to describe. Hopefully you can make sense of what I'm saying.
Avoid blobs of glue. Blobs are very bad.