Problems - Wet Layup + Vacuum Bagging

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Problems - Wet Layup + Vacuum Bagging

Author	Message
Dezer	Dezer posted 6 Years Ago HOT Topic Details
Group: Forum Members Posts: 74, Visits: 1.8K	Hello friends, I went to make a piece and I used the epoxy resin as gelcoat (this for not finding gelcoat for epoxy in small quantities in my country). I put the carbon fiber when the resin was already dry and lightly marking the fingerprint. After that I laminated and then put it in the vacuum bag. The problems were as follows: - dry areas on the carbon behind the surface resin coat that I made to replace the gelcoat - Corners with air bubbles, even putting carbon with tacky resin. What should I have done wrong?
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Dezer	Dezer posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 74, Visits: 1.8K	+x[citar] [b]Dezer - 9/2/2018 7:56:26 PM[/ b] Olá amigos, eu fui feito uma peça e usei um resina epóxi como gelcoat (não por gelcoat para epóxi em pequenas quantidades não meu país). Aí veio uma fibra de asfalto quando estava já seca e marcando levemente a impressão digital. Em seguida, laminei e coloquei no saco de vácuo. Os problemas foram os seguintes: - áreas secas no revestimento de resina de superfície que produzem o refugo do gelcoat - Cantos com bolhas de ar, até mesmo o mesmo em contato com o resíduo pegajosa. O que deveria ter feito de errado? [/ citar]
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Steve Broad	Steve Broad posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	I assume that you laid the carbon on the 'gel coat' dry? You need to thoroughly soak the carbon otherwise this can happen. On the gel coat issue, why are you adding one? If the mould is shiny and you are using a chemical release agent, such as Easy Lease, then the carbon will come out shiny. Brush on a light coat of resin on to the mould surface prior to the first layer of carbon is all you need to do, IMO.
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Dezer	Dezer posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 74, Visits: 1.8K	+x Steve Broad - 9/2/2018 9:22:23 PM I assume that you laid the carbon on the 'gel coat' dry? You need to thoroughly soak the carbon otherwise this can happen. On the gel coat issue, why are you adding one? If the mould is shiny and you are using a chemical release agent, such as Easy Lease, then the carbon will come out shiny. Brush on a light coat of resin on to the mould surface prior to the first layer of carbon is all you need to do, IMO. To avoid pinholes, air bubbles and bridges. And yes, the resin as gelcoat was practically dry glued lightly to place the carbon in the mold. But even using the resin as "gelcoat" to have the tacky, happened to have bridges and air bubbles, I believe carbon fiber should not have lifted.
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Fasta	Fasta posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	I think what you have is pretty normal for wet layup and bagging. It's not really a great to do it. I do hand laid parts with a gelcoat and no vacuum bagging, just really careful hand laminating and even then only for simple and suitable shapes. You could do some hand surface finishing after it is moulded but for this I would make the part without a gelcoat and then finish with a resin etc, preferably Duratec Sunshield. Or you should switch to infusion process which is great for cosmetic finish and no air bubbles. Fastacraft Facebook page
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