Seacats...What is your experience with heat while using polyester for tooling purposes?? I've always used epoxy...But polyester looks like it's about 1/3 the cost of epoxy which would be nice...I've also worried about stability and shrinkage over time...

"Way back when" I was a toolbuilder for a living...The thought of polyester tooling was laughable...But then again...Companies like Lockheed, Boeing, Sikorsky and McDonnell Douglas were paying for the stuff...A phrase often heard "Polyester is for Pools"...

Now that I'm footing the bill...Using Polyester doesn't seem quite as laughable as it once was...And I like pools...

I've been forking out the cash for Epoxy cause I'm still skerred...But if all you guys are using polyester with success...Maybe I should re-evaluate??

After All...This ain't the Space Shuttle!!

Thanks...

Chuck

P.S. My latest little project...A Classic Pattern Aircraft called the Atlanta...Getting ready to "bondo in" the split line: