Does anybody know what stock makers use to fill their carbon fiber stocks? Manners? McMillan?

Thanks

Unicorn farts.

Just a guess though

McMllan describe the void filling additive on the Edge, as a "dense eurethane foam".

Some sort of expanding foam...

Are you wanting to load a pair of shells or fill a cylinder to a smaller contour?

Thinking about laying up some carbon fiber as a personal projecy