Originally Posted by potus
semi-related... why do bicycle builders call them miters instead of copes? to the rest of the world a miter is a straight cut.
Technically, you are correct. A miter is an angled cut. A cope is a "saddled" cope and can also be angled. That is, that is what the motorcycle bike framebuilders call it. So, technically framebuilders should use the term cope instead of miter. It probably arose long ago from. One guy said it and the rest of the sheep followed.