I don't know if any of you are familiar with the "Insider Carpentry" channel on YouTube. Spencer Lewis does carpentry for high end homes and offers tips on how to be efficient in an effort to make the most of your time. You know, the whole "time is money" thing.
So here's my question: Is there side-to-side slop in *all* Domino usage and Leon's method just gives you more adjustment room or is Spencer using oversize holes in both boards? (I've always assumed that the standard Domino mortise would result in tight tenon, with no movement.)