LIttleBlackDuck
 commented about 12 hours ago 

It was that concept that finally convinced me on my Domino decision.  Have you considered it?

Are you referring to the Domino connectors?  I do have a set of those and did consider using them for a moment for this project.  But, they're not nearly as strong as a glued joint, plus, I didn't want the extra holes in the chair frame that are required for set-screw access.