Carlos, check out page 5, Jim's post #14129.
There are always exceptions to most rules. Here is one. A King post that is flared, wider at the top than the bottom, 11" top - 8" bottom. Now, you have a 6" ridge beam coming into the top of the King, with a brace flush with the ref. face of the ridge. Where the brace lands on the king you will have a mortice like the one you posted. This is where you could use a snap line down the center of the fanned King and place the brace accordingly. To gain the red surface, assuming this is the non ref. face, the more tricky side, no, lets just call it the reference side for simplicity and you are housing it to 1" deep. Bore to 1" deep a series of holes and clean up, or use the router and clean up.
timberwrestler, how about those French marriage marks? Tim
