To build any limb,one must laminate materails together.To say carbon/glass and epoxies aren't effect by tempatures seems incorrect.I understand foam as a insulater but not the other materails used to build a bow limb.
Odviously the amount of movement in wood isn't enough that one couldn't build bow limbs w/ wood.I'm referring to not allowing water into the limb w/ a sealer.Yes not all sealers are the same.I've had bows from dry climates blow up and delam by stringing or just drawing them.Both bows the finish was very poorly done and there where seperation gaps in the limb lams.The liklyhood that foam cores would've made more of a difference than a better job at sealing the bow w/ a good finish,dosen't add up.
As for the finish it's self.I've had bows that the finish peeled off when sprayed w/ bug spray.I have a bow that the finish isn't affected by bug spay at all?
I feel there are other variables that contribute to the durability of a bow and foam cores dosen't resolves those durability and weatherproofing issuses.I do understand how it helps the issue.
Kirk,
Aren't bowyers using carbon and boo on the belly of limbs now?