> It appears you mixed the wrong ratio of epoxy to hardener. Either

> you measured wrong ( I think you used graduated measures - often
> inaccurate),

> you did not empty one out completely (if you poured from one to the other
> did you wipe off the sides), or

> you did not mix well you may have left some hardener on the sides or on
> the stiring stick.

> Like they say the chemestry happens if you do it right ... I once mixed a batch of MAS @ 3:1 for a fillet and it only got mostly hard. I called MAS and they said MAYBE it will harden if you add heat to it. I bungied my wife's electric heating pad to it and it hardened after a day. You may want to try heat.