Uni mould tooling gel coat questions

Author	Message
Hanaldo	Hanaldo posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	It's pretty standard for polyester and vinyl ester based resins to be measured in 150g mass at 2% catalyst and 23 degrees ambient. Target gel time is normally 20 minutes. Rough rule of thumb is that every 5 degrees above that will halve your pot life. So 28 degrees at 2% would be closer to 10 minute pot life. Then the amount you mix affects things, as well as the type of container you are using (ie. Tall skinny cup goes off faster than a short wide cup).
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ECV3	ECV3 posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 30, Visits: 106	Hi Hanaldo, The uni mould guide does not give any temp range or pot life only a cure temp, what is the temp range to mix and apply the gel coat and how long should the pot life be ??? Cheers.
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Hanaldo	Hanaldo posted 9 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	Certainly does! Dramatically. Every 5 degrees halves your pot life.
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ECV3	ECV3 posted 9 Years Ago HOT Topic Details
Group: Forum Members Posts: 30, Visits: 106	Does ambient temp and the amount mixed affect the pot life?. I mixed 100 grams catalysed at 1.5% by weight and it went off in the pot in about 5 minutes. Cheers.
	Reply Like 3