How to make a carbon fibre part

A short 'how to' video for producing a carbon fibre part. This instructional video has been produced to accompany the John Burn Composite Kit which is available from www.resins-online.com.
It gives you an insight into the various stages of producing a carbon laminate with some useful hints and tips.
The kit includes the very latest Sika Biresin CR82/CH80-2laminating system with Biresin S5 gelcoat. There is 4 square metres of carbon fibre so you are able to produce a significant size composite part.
Other kits include carbon fibre vacuum infusion along with glass fibre versions of each kit.

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• how to laminate
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• fibre composites
• glass fiber laminating
• glass fibre
• John Burn
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[shaiful7002]

i wanna ask bout gelcoat,what is it acctually?i mean its function?

[johnburnify]

@shaiful7002 a gelcoat has anumber of functions. Primarly it's used to provide a suitable working surface for your laminates function when being used. If you laminate needs a surface finish that can handle chemical attack, high temperatures or needs to have a polished surface then you would need to use a gelcoat that is suitable for these. In the case of this carbon part it is to provide a gloss protective surface.

[210482fmj]

how strong is this technique? HOw much force can it take before it breaks apart. What about putting it in an oven

[johnburnify]

@210482fmj The strength will depend on how long it has been post-cured and at what temperatures. The TDS for CR82 gives three different cure profiles and the Flexural/Tensile strengths along with the elongation to break are important. The strengths will change with the addition of fibre. The most important thing is that the elongation to break is greater than that of the fibre e.g. carbon has an elongation of 1.8 and glass 4.5.

[ehteshambokhari]

what does 150 and 300 gsm mean ?

[johnburnify]

@ehteshambokhari this refers to the weight off the carbon. 150grams per square metre. Hope this helps.

[210482fmj]

@210482fmj I was wondering how to go about making a wing for a hang glider from carbon fibre

[johnburnify]

@CarlWong510 Thanks for your question. I have posted a response, hope it helps.

[johnburnify]

@CarlWong510 If you haven't made the bonnet already you should incorporate the fixings into the laminate. Otherwise it would be better to to bond the fixing plates with a slightly flexible adhesive which would also insulate the steel parts from the carbon to minimise the potential galvanic effect between the carbon and metal. The adhesive could be an epoxy or MMA. It might be an idea to consult a specialist automotive aftermarket parts company for their advice as well.

[CarlWong510]

Hi, mind if i ask? I make a carbon fiber bonnet, and plan to install it, so how should it be install by? By using bolts and nuts it'll needed to be drill a few holes on it so maybe a bit risky. What should i do then?