Ken:
The .02 carbon is a tissue-like material with indiscriminate weave. Good for over solid surfaces; not good over open bays. I get mine from Aerospace Composite Products in San Leandro, CA. It used to be very affordable, but - like everything else - it has gone up in price significantly. I'm looking around for a more affordable replacement
I got some of the more affordable stuff, and it
won't be a nightmare
the next time -- I tried putting it on the way folks tell you to do the ACP stuff, and it was a disaster.
It turns out that some of the carbon veil has sizing that's soluable in the thinners found in dope, and some doesn't. This isn't too surprising, because epoxy isn't dope. After a disaster of wrinkles and failed attempts at sanding them out and cursing and another layer of tissue, etc. I heard the factoid about the sizing. Took a scrap of the stuff, dampened it with water like it was silkspan, and it went on like a dream.
So, when you're looking, if you find something, try out a sample patch with just dope, and if that doesn't work try dampening it with water or alcohol.