The filler shouldn't have any effect on the cure rate of the resin. It's just calcium metasilicate and silicon dioxide - both are realtively inert.
Shine an incandescent lamp on it for a couple of hours, or leave it in the sun.
Thanks, after I read your post I relaxed. I was about to scrape it off and sand the rest out and start over. It is just taking a while to set I only added 8 drops of hardener for about 1.5 - 2 oz of resin and enough 404 to turn it into mayonnaise. The resin recommends 10 drops per ounce. I felt it this morning and it had set.
I heard that adding less hardener makes the resin stronger overall even though it takes longer to set? This is not why I added 8 drops, the 8 drops was a goof.