The acp link is a particularly good one for modelers. The owners, the Sparr family, although into a lot of high tech sporting/musical, etc. goods also have modelers in the family. They are where the talk of soft/hard CF veil came from and are well aware of the differences in application. In addition they handle hundreds of different forms of CF and FG materials and constructs that have valuable applications in our hobby; tubes, rods, sheets in a variety of forms, etc.
Although I'm not currently "active" at the building bench (or the flying field, for that matter) I retain ACP in high esteem and used to visit their facility in Livermore and, earlier, on the San Francisco peninsula, reasonably regularly. I encourage modelers interested in high tech composites to spend some well directed time at their web site:
http://www.acpsales.com/company.htm .
Ted Fancher