Re: Shelf Life of Acraglas??
It might work, but I don't think I'd want to use something 'iffy' for my first try. In fact, I wouldn't want to use Acraglas at all (at least the liquid, I've no experience with the gel). I got the Brownells kit for my first job, and it didn't come out great and was tough to work with. Main complaint was it was too runny, but I didn't have any fiberglass to mix in like old bear suggested. Vastly prefer Devcon Steel Bed (#10110), which I've used since.
Empirical results rule!