Artemus wrote:
Am I missing something? I reread the OP's post and couldn't find
any mention of a single pass.
Maybe he just wants to make mortises that are deeper than 2"

You may be right. He seemed to make the point that he couldn't find a
cutting edge length longer than 2", and I interpreted that as meaning
that he wanted a cutting edge length at least as long as the tenon...

Perhaps I misinterpreted.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/