Tooling Gelcoat is marine grade formulated specifically for mold making. Tooling gelcoats utilize selected resins that exhibit high heat distortion, high gloss and a hard durable surface to withstand the repeated mold cycles.
Tooling gelcoat will not harden and allow for the fiberglass and tooling gelcoat to bond while being in a mold. You will then need to add a surface treatment to the tooling gelcoat so that it will harden, such as PVA or other air inhibitors such as a mold release agent.
GEL COAT PREPARATION Stir container thoroughly before using. Do Not Over Mix.
MEKp (catalyst ratio)
Gel Coat will begin to gel in approximately 10-17 minutes at 77 F. In warmer temperatures (90 F) reduce MEKP Catalyst (not less than 1.2%). In cooler temperatures (60 F) increase MEKP Catalyst up to 3%. Gelcoat may not thoroughly cure if applied in temperatures below 60 F.
Note: This time element is dependent on material temperature, room temperature, humidity, air movement, and catalyst concentration. Gelcoat should not be used when temperature conditions are below 60°F, as curing may be adversely affected.