I just lost an insert that was put in with GT Glue. It was put together by my brother. I shot three arrows at my neighbors target. One still had the GT Glue and the other two had already come loose and been glued with hot glue stick.
Unbeknown to me, the target was made with a few layers of cardboard and then plywood behind that. The arrows went deep into the plywood and only one came out, the last insert that had been glued with GT. So I dug out the insert and reinstalled it with hot glue stick. And it is still in place.
I do not know if this was because my brother used too little or too much, or it was from the impact into the plywood, but I do know that none of the three inserts stayed in with the GT Glue. I have yet to loose one with hot glue though.
Maybe this is because I am shooting in sub zero weather and the GT Glue gets more brittle then the hot glue? I don't know. I would be curious what others think about this.
Dave