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Hi!
I have made several carbon-fibre reinforced "timber beams" in effect they were raw "blocks" for cutting out the "core" of rifle stocks, and consisted of layers of 5 mm balsa-wood laminated with unidirectional Carbon cloth -using West Systems laminating epowy and vacuum bag consolidation, along with big "c-clamps"
The resulting ultra light weight "beam" was much stronger than conventional timber beams- even mulitple layered laminated beams made from Birch- of similar dimensions - and the beam stiffness was orders of magnitude better. (They will however dull conventional band saw blades extremely quickly when you try to cut out the rifle-stock contours -- the owner of the band saw was not at all pleased with that :-|)
My take on this is that you would probably be able to make very stiff and strong beams using this simple tech -- but the CF inside the laminate will just be thin black lines, looking like black glue -- For decorative purposes you could laminate on an outer "bottom of beam" layer of wowen CF cloth.
I'm personally contemplating this for my new dining room table :-)
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