I built a fixture to allow vertical joinery on the SO3 as I’m not a fan of the mickey mouse ears joints that are common to horizontal joinery. I originally built it for JointCAM which is a very good software tool that helped me get started. I’ll continue to use JC along with other custom joints. Once you get started with vertical you will realize that the possibilities are endless.
Btw, the major challenge with the fixture was securing a tight fit on a platform that could not stick out beyond the front of the SO3 very far and use up the extra Y. If I were to do it again I might have considered using thinner alum. Also is the rigidity of the platform where we tapped 1/4-20 holes in the front of the SO3 and also the table that it was sitting on. That thing was not going anywhere. Here are some pics detailing the design and some interesting cuts inspired by Mirock.
Perry