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Using Composites / Epoxy

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aalfabob

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Ive been searching the internet for information on working with composites (S-Glass, Carbon Fiber, and Epoxy) for a while now and cant find much information on using them.

Some things I have questions about:
How to do mulitple layers of the composites
What kind of resin I need for the projects (expoxy for room conditions?)
What do I use as a finish (epoxy?)
Steps in making and finishing parts

Im using Urethane Rubber for the mold, will this work well for the materials im using?

Any help or links will be very helpful, Thank you
 
aalfabob,

If you intend to do composites, I recommend you read Andrew C. Marshall's "Composite Basics Six" sixth edition. This book will answer many of your questions...

Materials compatibility has to be researched, there is no way around that! The manufacturers of the materials you will use should be able to suggest epoxies that will work with your materials. You should also validate with the epoxy manufacturer as well.
 
I apologize, but the above link is now dead...

I will search for the new address.

RikuY
 
From my experience using urethane rubber for a mold, you really always need a mold release which almost always messes up your surface finish. I switched to RTV silicone rubber 2 part mix and have never looked back. No mold release is needed
for RTV silicone, and as long as you are careful when pulling out a fresh part.... the mold will last a long time for you.
I use the RTV as my female part, and use fast set concrete to recreate the original part (male part). These are just mirror covers that we produce for Nissans, but it is a simple and effective method.
 
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