Dan, I won't have any problems figuring it out. I had the first version of the McNaughton cutters, where the wing was all on one side. I heard that people were experimenting with different shapes, so I did as well. Bevel to the right, bevel to the left, and square, and I settled on square across. Even with their newer blades, I grind them straight across. I have put some tantung on the tips of old blades, and it works fine. The spear point was a Mike Mahoney idea. The purpose was in part to be able to cut a blank all the way out. If you are cutting crotch wood, or some burls, if you try to break the core out, you can rip fibers out all the way through the bottom. Did that more than once. To me, the trick if you are trying to do that, is to have the cutter at dead center. If you are below center, it is impossible. Being able to figure out where dead center is the trick. With the coring systems that are on a fixed base like yours and the Oneway, this is not a problem. The McNaughton, well, you have to figure it out. Oh, part of the spear point idea was also for 'fishtailing' as Mike called it. He wiggles the coring blade side to side as he does deeper cores. This is to open up the kerf, which is a necessity. I do need to make my own blades and bend them to perfect circle arcs some time, just to see how much of a change that will make. I do have the Max 4 system. Still in the box....
robo hippy