THI-VEX™ Silicone Thickener
THI-VEX Silicone Thickener is a liquid additive made especially for thickening Smooth-On’s Mold Max™ Series (tin catalyst), Smooth-Sil™ Series (platinum catalyst) Rebound™ 25 (platinum catalyst) and Dragon Skin™ Series (platinum catalyst) silicone for vertical surface application (making brush-on molds). Different viscosities can be attained by varying the amount of THI-VEX. THI-VEX is skin safe and certified by an independent laboratory.
NOTE: THI-VEX is not compatible with Mold Max 40, Mold Max 60 or OOMOO™ silicone rubbers. THI-VEX is added as a percentage of Part A and must be thoroughly mixed with Parts A and B.


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THI-VEX™Liquid additive that thickens most Smooth-On mold making silicones for vertical surface application (making brush-on molds).