Anyone ever have any epoxy that just never wanted to fully harden? I have some 30 minute stuff I bought a few weeks ago. The first time I used it, it was still gummy the next day. I figured that I made a mixing mistake. I used it again today and it's still extremely soft after having the better part of the day to set up. I've never had any trouble with this stuff before, the same brand I always buy. Epoxy isn't rocket science to use so I figure there must be something wrong with it. It just doesn't have a very strong epoxy smell to me either.