Will, I wonder why we don't see more of these modified machines? Were they simply not needed? The machines I use are "simple" in comparison, not as many gizmos to mess with and the same job is completed. Timber framing as well, was winding down and this technology maybe just fell by the wayside. So, not many of these improved machines were manufactured. The step from a T-auger without a feed screw to the boring machine was a large step. What year was the chain morticer we know today put into production, 1980's?

Tim