Ash core

My Prognosis...   It's a damn shame...  Build another...  Maybe use maple and no alcohol...

Do you have pics of one of your other bows that is the same model built with the same taper showing brace, unstrung and full draw??  Could be a flaw in your design...  I am not familiar with ash in bows but it has a very open grain which could maybe be an issue...

Lot's of better core wood for that

I agree but it's the wood I have available

I can't imagine the Ash was the problem, unless it was a heavily biased end grain cut. Ash is some seriously strong wood. C'mon, it's the wood of choice for Baseball bats. I know it glues well.
Maybe the bow had a little to much action at the fades, or maybe your Bro dry fired it and was too embarrassed to say so.

Had a friend accidentally shoot an arrow with no point one time. He was barely shooting 7 GPP to start with and blew one of mine up. No help on something that has weakness!

Yeah I think ash is plenty strong and glues well. I used to make self bows from ash.

what kind of glass?----ea-40?