Scrape the sides and bottom of the pot as you mix. Use the flat end of the mixing stick to reach the inside corner of the pot. Add fillers, additives or pigments if required, after thoroughly mixing resin and hardener. If you are going to be using the mixture out of a roller pan, mix it thoroughly in a mixing pot before transferring it to the roller pan. Do not use a power mixer unless you thoroughly scrape the sides and corners of the mixing pot while mixing.
Heat is generated by the chemical reaction that cures epoxy.
A plastic mixing cup full of mixed epoxy will generate enough heat to melt the cup, if left to stand for its full pot life. Avoid breathing the fumes. Do not dispose of the mixture until it has cured and cooled. Open time or wet lay-up time describes the working life of the epoxy mixture. At this point the epoxy will no longer feel sticky, but you will still be able to dent it with your thumb nail.