Originally Posted by Boostedrex View Post
That confuses me a bit Brian. Fiberglass will be stronger than MDF while remaining thinner and lighter. Just lay it up where it doesn't have any large flat areas and you'll be good to go. Though I'm sure you're no rookie at laying glass. I avoid MDF as much as possible because fiberglass is so much stronger and easy to mold to specialized shapes.
In that case my glassing skills suck, LOL. I just seem to get better results with your basic heavily braced wooden box...