The system uses a router platform that can either be mounted to the box, or used inverted on the router table. The router table is my system of choice. The platform has fingers that allow it to follow a standard guide bushing mounted in the router base.
The second part of the system is equally important as it allows the box maker to cut tapered dovetail shaped splines or keys that slide tightly in place with glue. To further test the system, I'll nest an additional smaller key inside the larger ones to make an even more interesting joint.
As you can see in the photos, so far, so good. After the glue has set, the keys will be routed flush with the box sides so the next step can be taken
You can find the Infinity system at InfinityTools.com