PU Resin for Layer Damping?

[Kchink]

I would tend to agree with Voicecoil, I think there are better materials for a gantry than carbon. Then again for a 3D printer or plasma/laser it may be fine??? But I will say this...

String instruments like pianos and violin's are made from carbon fiber for it's resonance characteristics, I know the fabric laminates are engineered to enhance this - But still, they wouldn't use that material if it wasn't suitable.

If we're going down the composite route, Flax or Jute fiber's on the other hand would be better in my mind. These are used to make door cards in vehicles, for example. Forming the structural component and sound dampening in one piece, instead of multiple layers of different materials for a similar effect, thus reducing weight.
And as you say, different resin matrix's could enhance dampening Futher.