I have been offered two hives. One is living in the hollow section of a downed tree that has already been cut into a log and the other is in an old steel belted tire. I have done a couple of cut outs at this point and was wondering if anyone had advice about the best tool to cut open the tire. There is no rim attached and could possibly just prop it open and make the removal from there but think it would be easier if I could get more access by cutting it in half. Suggestions??