The Dog wrote:
aschaffter wrote:
Be careful with the Kitty Hair. Like the long strand stuff West Marine sells Kitty Hair is a polyester (not epoxy) resin-glass fiber mix that kicks off pretty quickly after adding the hardener.
To be fair, that's typically more of a pilot error than a product problem. Most 2-parts are pretty sensitive to mix ratios and temperature.
True. That's what I am saying.
I'm AM a pilot, and I have made that error!! From many years working with both polyester and epoxy based fiberglass (skate boards, surf boards, boats, airplanes (not models), and now Hobies), I have found that many of the polyesters kick off much quicker than epoxies. If you are not careful and treat Kitty Hair like many people treat Bondo and other cream hardener activated polyesters, it will kick off on you before you are ready. According to the product sheet, the approximate setting time is 5-6 minutes @ 75°F to 80°F , so if you dawdle or are slow mixer . . . . . . and you shouldn't try to apply it once it starts to thicken/gel!!! Mix it, pick your nose, scratch your b _ _ _ and BAM!!! it has kicked off.