stevebubs
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| posted on 16/1/06 at 08:32 PM |
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Am I using too much Gelcoat?
Managed to find my copy of "competition car composites" tonight and have a feeling I may be putting the gelcoat on way too thick...
It recommends a gelcoat thickness of 0.4 - 0.6 mm which means I should have used about 300g of gelcoat....so far, I've used a complete 1kg
tin....
(if laid out flat, the surface area of my mould is about 70cm x 70cm)
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emsfactory
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| posted on 16/1/06 at 08:43 PM |
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I may be wrong but i dont think it matters for the mould. I think if you go mad it can distort through heat.
For the moulding however, you want a thin, mm or 2, coat of gel.
It means that if the panel flexes a thin coat of gel is more likely to flex with the panel wheras a thick gel coat is more likely to crack.
[Edited on 16/1/06 by emsfactory]
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stevebubs
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| posted on 16/1/06 at 10:35 PM |
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I'd surmised as much. Therefore the 5kg of clear gelcoat I've just ordered should last me a while.....
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emsfactory
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| posted on 16/1/06 at 11:26 PM |
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Yep.
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Triton
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| posted on 16/1/06 at 11:38 PM |
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If you are after a gel coat finish you will need a good coat and some colours need two coats especially yellow.
Get the gel too thin and it will wrinkle and on something like yellow you will get weird patterns going on where the gel is thinner.
My Daughter has taken over production of the damn fine Triton race seats and her contact email is emmatrs@live.co.uk.
www.tritonraceseats.com
www.hairyhedgehog.com
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stevebubs
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| posted on 17/1/06 at 09:31 AM |
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quote:
Originally posted by Triton
If you are after a gel coat finish you will need a good coat and some colours need two coats especially yellow.
Get the gel too thin and it will wrinkle and on something like yellow you will get weird patterns going on where the gel is thinner.
So how thick should I be aiming? Guessing the mould is currently about 2-3mm...
[Edited on 17/1/06 by stevebubs]
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