I have found that if you use too much filler material like wood flour or normal flour, that it can cause softer epoxy (and maybe slower drying).

pete czerpak
albany, NY

: I found that my RAKA pumps "burped", especially the resin pump
: because the viscosity of the resin is lower than the hardener, so I didn't
: trust them and pumped into measuring cups to make sure I got the ratio
: right.

: That being said, I did mis-mix one batch that I coated a couple paddles with
: and ended up with epoxy that was tacky a day or 2 later. I took the advice
: of people on this board and put my paddles in a make-shift oven -- a
: cardboard box with a couple 100-watt work lights inside. In a day or 2
: they were nice and hard. If you say yours is rubbery, you're already
: better off than my tacky paddles were, so I'm sure yours will be fine if
: you heat it up for a while...

: Dean