Quote:
Originally Posted by jamesqf
Polyester resin does not eat through urethane foam. (It's a yellowish-tan color, rather than the pink or white of styrofoam.) Couple of other advantages, too. One is that you can build up areas with urethane sealing foam ("Great Stuff" is one brand), another is that it bonds really well with urethane glue ("Gorilla Glue").
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James,
I must say that my experience with GreatStuff comes with some cautions.
It works good for areas that need filling, but it keeps expanding for about one month afterwards. If this is OK, then by all means go ahead and use it.
Gorilla Glue is basically the same product except that it is much thicker and expands at a much lower rate, but IT STILL EXPANDS.
I had trouble with Gorilla Glue on the tail around the side mounted rear facing lights, as it kept expanding and bulged the foam in the area.
If I had to fill an area and really want the finished product to be mechanically stable, then I would use either pink foam and/or epoxy resin mixed with micro-ballons as the filling agent.
Jim.