Hi there,

We always use bare-faced tenons on our braces (1 1/2" shoulder, 1 1/2" tenon). It is important to remember when doing this to keep the tenon to the interior of the post. The possible downside to this approach is that braces are not universally interchangable: they acquire a "handedness". But they require less work to produce: one shoulder versus two. Also, you might consider holding the perimeter braces in an inch. As the wood dries, your braces will shrink away from the wall, leaving a small space that is very hard to maintain with fresh paint, etc. it also eliminates trim problems near windows and such.

As far pegging braces, I can't tell you definitively why they most often get pegged now. We do, but I know a few timberframers who do not peg braces. We like the look of pegged joinery and often use the opportunity to use smaller pegs and contrasting wood species. 3/4" cherry, locust, osage orange, walnut, and others as they present themselves.

Good luck on your adventure!
Bob