I'm finding is near-impossible to properly seat the carbide cutter inserts on my
Grizzly G0856 8-inch jointer. It seems that no matter how careful I am to clean the
carbide inserts and the cutterhead body and apply the recommended torque to the installation screws, the
net result is a poorly jointed surface. In mild cases, the surface is slightly wavy (undulating a few thou
across the board), while in other cases there are clear ridges left behind by some of the inserts.
It seems obvious that the inserts are not seating properly. In fact, it appears that the angular orientation of the inserts is not repeatably registered. Slight variation of the applied torque to the screws can result in slight rotation of the insert. Even when I tighten to the same torque repeatedly, slightly different orientations of the inserts can result. The effect is small, but you can see it by eye and the jointed surface reflects this variability.
Is there some magic to the installation of the inserts? Have others seen similar problems? Is this
a Grizzly issue, or just an incompetent user?