putting glass between lams?

[Longtoke]

I noticed one of my bows has a layer of glass in the middle of the lams.  what would the pros and cons of this approach be?  Has anyone else tried it?

[Crooked Stic]

Prolly core tuff. They used to use it to stabilize. There is also uniweft (a woven glass for that also.

[B-JS]

Pro: nice Colour accent, maybe a Bit torsional stability
Con: adds weight to the limb

[Kirkll]

The lightest weight glass product you can use for torsional stability in the core is Stable Core. its only .015 thick. Seems to work best right under the glass on back side of the limb though... If its dead center of the core it's pretty much a cosmetic  racing stripe.

A thin twill or bias weave carbon works better for stability. For a rock solid light weight recurve i've used .015 twill over stable core on the back and got incredible torsional strength in a 30# radical recurve limb. It felt as stiff as a 60# limb torsionally.   Kirk

[Camp Creek]

I don't see the point in that from a mechanical standpoint at all..  Fiberglass is denser than wood and the only point in adding that mass to the limbs is to provide strength.  The bending stresses are at a minimum in the center of the limb, so putting it there is pointless, and putting it at the back or belly would give the same torsional benefit.