The wheels are turning in my head.
Has anyone used fiberglass as a core in a tri lam??
Does this make any since??
Hickory
Fiberglass
Osage
No, no sense in it. Fiberglass's benefits are realized in its resistance to compression and tension forces which are exerted on the back and belly surfaces. The core is considerably more nuetral and if anything, would benefit from something lighter, to take up space, such as light weight wood, foam, even carbon would be better than fiberglass. If a bows wooden back and belly can handle those compression and tension forces.... like hickory and osage can, there's no need for glass anywhere, it just slows a bow down. As such, the core would be the worst place you could put it.
Yup, Bowjunkie pretty much covered it. Glass is a lot heavier than wood for the same thickness, making it a rather poor choice for a core (actually, the worst choice as far as materials commonly used for bow making go). Cores you generally want to be as light as possible for it's given thickness.
Thanks