fiberglass splitting

[macster]

I built a take-down longbow from binghams. It has a bubinga riser and the limbs are maple with black fiberglass. It turned out nice and has been shot probably 500-750 times with no problems. It turned out about 35-40 lbs. I noticed that the limb glass is splitting where it attaches to the riser, about 4 inches long, between the limb mounting holes exactley the same on both limbs. What could be causing this?

[Pat B]

You might be tightening the limb bolts too tight.

[kennym]

Sometimes if the wedges and lams can get a bit of moisture,it will swell em and split stuff too. Did you finish the inside of the limb bolt holes?

What Pat said also!

[macster]

I used a spray finish, so maybe the holes did not get enough finish in them.