How to extend polyester resin pot life?


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Massimiliano
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Hello,
what are the ways to extend the pot life of polyester resin (if possible)?

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Hanaldo
Hanaldo
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Epoxy is harder to hand laminate with than polyester, for sure. 

It sounds like you are mixing your batches too big? Only mix what you can use within the pot-life. As you get experience, you will learn to work faster and be able to mix larger batches. I started off struggling to get 500g on the job before it started to gel. These days I have no worries mixing 2kg on a 40° day and getting it all on in 5 minutes. But start slow, give yourself more time by doing more mixing.
Massimiliano
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Hanaldo - 5/4/2020 1:42:34 AM
Epoxy is harder to hand laminate with than polyester, for sure. 

It sounds like you are mixing your batches too big? Only mix what you can use within the pot-life. As you get experience, you will learn to work faster and be able to mix larger batches. I started off struggling to get 500g on the job before it started to gel. These days I have no worries mixing 2kg on a 40° day and getting it all on in 5 minutes. But start slow, give yourself more time by doing more mixing.

2kgs in 5 mins? How many arms do you have? :-))

You are right... I need more practice with smaller parts and especially smaller batches.
What is your preferred tool to spread the resin? Brush, roller, squeegee etc.?

GO

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