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[bbdave]

I'm thinning some polyester resin with styrene by 10% do i need to add more catalyst?


Dave

[Subculture]

I would, although you have a very wide tolerance with polyester resin catalyst. Best advice I can give is make sure the mould is kept warm that works best for the cure. I tend to do my fibreglassing in the summer months, not that we had much of one this year!

[Howard]

Could someone explain this please why, how and what are the benefits please.
          Regards  Howard.

[Subculture]

Styrene thins the resin a bit more to help it penetrate the wood that Dave is laminating onto.

For normal laminating you don't bother.

[bbdave]

I have a warm room so no worries there i might get my glassing done this weekend if our visitors have gone, i'll add more catalyst to be on the safe side.


Dave

[Subculture]

Well if they're visitors you'd sooner see the back off, start now, they'll soon find an excuse to depart!