On Mar 25, 7:58*am, wrote:
On Wed, 24 Mar 2010 20:20:45 -0700 (PDT), Frogwatch

wrote:
Say you want to drive the moisture out of gelcoat. *I've used a heat
gun to do it and was surprised at how much water came out.
So, what would a high power microwave unit do? *Water absorbs the
microwaves much better than the polyester so it would get hot and come
out. *This would avoid the months of waiting for a hull to dry if you
are repairing blisters (a real scam as blisters are not a real
problem).

"some" blisters are not a problem.

Who said anything about being safe? Seriously, you could put an
absorber on the far side to stop the waves or even a metal plate (thin
foil) to reflect em back to be more efficient.