🚀 go-pugleaf

I have some questions about carbon composites, and specifically:

What is the difference in composition and mechanical properties
between carbon and graphite fibre?
Why carbon fibre materials are generally considered better than
fiberglass?
What is carbon foam (used in construction of bow limbs)
Where to get carbon composites in small quantities?

I am thinking of making a bow using carbon fibre comp. alone or with 
fiberglass. I got quite a bit of help from netters on alt.archery, i.e.
that carbon fibre makes bows faster and carbon foam (?) helps to stabi-
lize and waterproof the bows, also allowing more bending within elastic
limits (less stacking). Before I get intio this, I thought I'd rather
ask here too.

Thanks for help

Adam