Bubbles and voids


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Gg_knives
Gg_knives
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https://www.dropbox.com/s/a6elkl1n5dkkn17/Photo%2003-10-2016%2C%2014%2043%2028.png?dl=0

Hello there, I have produced several sheets of carbon using a press I have made out of two sheets of 10mm aluminium which I bolt together. My intention is to make thick slabs of carbon which I can then cut into small blocks and use them for making knife handles.

The trouble I am having is small air bubbles and voids I use 12k 650g 2/2 twirl carbon 8 layers thick. I compress this stack down to 4mm using a shim on each side of my aluminium plate for a thickness guide. At first I was worried about applying too much pressure as a lot of epoxy is already forced out the sides of my press but maybe more presure might push the air out??

The questions I have are:

Is there such thing as over compression will it make dry spots or weaker carbon?
Will a simple case of using a bristled roller instead of a finned roller solve this? 
Would using thinner 6k 200g 2/2 result in no bubbles? 
I'm using standard el2 epoxy is there an epoxy that will give better results? 
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scottracing
scottracing
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it definitely looks like the material isn't wetted out properly or there's some excess resin being pushed out. Are you wetting out each ply individually then laying them on top of each other?
I would add a cork dam or use some other means of retaining the resin into the laminate when you are pressing, also what temperature are you curing at?
GO

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