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Used Pattern-Coat Hi-Gloss instead of Polyester Gelcoat GC50 for the...
Used Pattern-Coat Hi-Gloss instead of Polyester Gelcoat GC50 for the mould
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Used Pattern-Coat Hi-Gloss instead of Polyester Gelcoat GC50 for the mould
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x3n
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x3n
posted 5 Years Ago
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Hello Guys & Easy Composites Team,
I have used wrongly the Hi-Gloss Pattern Coat for my mould instead of the Polyester Gelcoat GC50.
First I prepared the mould with 3 layers of wax (soft hand polishing) and one layer of PVA.
Than I put a thicker layer of HI-Gloss with a brush onto it.
I wanted to do a carbon fibre hand laminate after curing.
Does it makes sense now or do I have destroyed my mould with the wrong coat now?
What happens if I continue with the hand laminate now?
Does the mould will separate from the hand laminate or the hi-gloss coat?
Thanks a lot for your help and support in advance.
BR
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5 Years Ago by
x3n
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Used Pattern-Coat Hi-Gloss instead of Polyester Gelcoat GC50 for the mould
x3n
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5 Years Ago
I would not risk it. The high gloss primer is specially formulated to give extra little tack to other resins. You could even take epoxy moulds from it, wich is problematic with other polyester resins...
oekmont
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5 Years Ago
Thanks oekmont.You mean to sand it an try the laminate? That would be a better option than i‘ve done now.These are my first tries. Hopefully the gelcoat is giving extra little tack to the mould. I’ve...
x3n
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5 Years Ago
I wouldnt bother sanding it, it typically doesnt work well and theres a chance you hit your mould which would be bad. Just layup a layer or two of 225g CSM with polyester or vinyl ester resin onto it...
Hanaldo
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5 Years Ago
The release worked well. I'm happy with the first try. Even if the part is not that good. Too many air bubbles :( I will now do another part using the GC50. Already sprayed with a 1.4mm nozzle gun. I...
x3n
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5 Years Ago
If you work with gelcoat, I would always advise to do resin infusion instead of wet layup with vacuum bagging. In fact, even without gelcoat I would prefer resin infusion. If you have bagging...
oekmont
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5 Years Ago
I thought about it. But do you think I can avoid the air bubbles with an infusion? The form is quite complex. Does the layup fit the shape perfectly with infusion? Of course I would prefer it too....
x3n
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5 Years Ago
You could certainly get this air bubble free with infusion. If you avoid the mayor mistakes it is almost guaranteed to get a better result compared to wet layup. For a part this size flowmesh is...
oekmont
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5 Years Ago
Cool - I think I will try it. What a the mayor mistakes? Can recommend something to me?
x3n
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5 Years Ago
Key thing with infusion is do not go near resin until you know you have a good sealed bag. If your bag is leaky, you will likely just ruin the part. The other areas you can see on your finished part...
Warren (Staff)
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5 Years Ago
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