Followed the mixing directions exactly. After 10 minutes of stirring, it was still very liquid. After another 20 minutes, it was still very liquid and couldn't be used. I mixed it in a small wax Dixie cup with a wooden tongue depressor. My shop is air conditioned and the shop temperature was 74F with less than 50% humidity. Before totally condemning the product, perhaps one of the ingredients was out of date or somehow damaged by its previous storage environment. I read other reviews prior to buying it. It just didn't work for me.