HI-VEX® is made especially for thickening Smooth-On silicones for vertical surface application (making brush-on molds). Different viscosities can be attained by varying the amount of THI-VEX® added. THI-VEX® is added as a percentage of Part A and must be thoroughly mixed with Parts A and B.
THI-VEX® will not work with Mold Max® 40 or Mold Max® 60 silicones.
Safety - Use in a properly ventilated area (“room size” ventilation). Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk.
Store and use material at room temperature (73°F/23°C). This product has a limited shelf life and should be used as soon as possible.
MEASURING & MIXING - If using Mold Max®, the brush-on mold process can be shortened with Fast Cat® 30 catalyst or Accel-T® cure accelerator. Because silicones have a long pot life, time between coats can be 2–3 hours. Adding Fast Cat® 30 catalyst or Accel-T® cure accelerator will accelerate the brush-on mold making process down to a matter of hours.
Mixing - Add desired amounts of THI-VEX® to material and mix thoroughly. Important: Be sure to scrape the sides and bottom of the mixing container several times while mixing. Be aware of your working time. Note: results may differ due to variables in temperature, humidity, etc.
Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.
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