Accel-T™ is a one-component additive that will reduce the cure time of Smooth-On tin cure silicone rubber compounds, in proportion to the amount added, from overnight to a few hours. Accel-T™ is added as a percentage of part B, before adding Part A. IMPORTANT: Working time (pot life) is drastically reduced in proportion to the amount of Accel-T™ added. The viscosity of the rubber will also increase. Mix, vacuum and pour quickly.