As a Roman re-enactor I sometimes need to make a secure join between to pieces of wood at 90 degrees. Usually, there is a partial half-lap joint and possibly a peg, but finally the join is secured by wrapping with leather thong.
The trouble is that no matter how tight I start the wrapping, it soon works loose - maybe days, maybe hours.
So, my question is, how to make sure leather thong goes on tight and stays that way?