What is the black material on composite craft chassis

[JosephS]

Hello all.
What is the black top and bottom layer of a composite craft chassis made of? It seems to be a black fiberglass, but I haven't found any black fiberglass fabric nor have I seen any kind of carbon fiber with that type of canvas weave.

It also appears that the center is a non-fiberglass polyester fill layer.
Does anyone know?

[RC10resto]

Not sure, but I thought they were Graphite?

[JosephS]

Not sure, but I thought they were Graphite?

Thanks. That is leading me in a good direction
https://www.pccomposites.com/category/dry-fabrics/graphite-dry-fabric/

[jwscab]

Graphite, just carbon fiber. Usually a super fine weave but could also be isotropic.

[Phin]

Black CF, without a weave pattern, is usually sold as unidirectional. Isotropic is the fab process where each ply of CF is laid at a 45 or 90 degree angle to the previous one.

[JosephS]

Black CF, without a weave pattern, is usually sold as unidirectional. Isotropic is the fab process where each ply of CF is laid at a 45 or 90 degree angle to the previous one.

Thanks.

[jwscab]

Yes sorry, my mistake. Unidirectional is often layed out in isotropic patterns for strength, as Phin said.