What are the 4 threaded holes on the front of the spindle mount for? I’ve3 looked at the videos online, and searched the manuals, and the forum. Can’t find an answer. I thought it might be for a dust boot but can find that device that bolts on the front of the spindle mount.
On the Shopbot the mount we were/are using is homemade and holds a Porter-Cable 3.5 horse monster with screw clamps. But it was 20 years old when the tornado hit.