THI-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.