These assemblies are designed to cut tongue & groove joinery for solid wood paneling.
Each assembly comprises a profile cutter, a rabbet cutter and a groove cutter, two different-size bearings, a 1/2" shank arbor, a selection of washers, shims and spacers.
Assemble the profile cutter, small bearing, and rabbet cutter as shown in the solid drawing to cut the tongue. To rout the groove, mount the groover and large bearing with the profiler, as shown in the ghosted drawing. This tool will work stock from 1/2" through 1" thick.