I finally got a chance to use the axe with the primary polished, and the performance did seem to increase some. However it is hard to judge axe performance changes on a small scale without a direct comparison. However the binding can only improve, in any case, and it doesn't take that long with a sanding disk, plus from a durability standpoint it makes sense anyway. I think I am going to see if I can get a custom maker to even up the grind a little, as doing a nice smooth concave arc with an angle grinder isn't trivial.
Here is a before and after shot :
http://www.physics.mun.ca/~sstamp/images/hults_before_after.jpg
The one on top isn't the axe I ground, however it is the same type.
During the wood cutting yesterday I had the worse glance of this year. The axe broke from a knot badly and smashed hard into a rock which had been covered by moss. The edge was damaged for about an inch on the extreme upper part of the bit. The majority was just impacted for about 1 mm or so, nothing major, however the very tip took a large lateral load because of the irregular shape of the rock. This resulted in a piece about 1/4" wide and 1/8" deep getting blown off. I just ground the tip down a little, as it would take far too much work to move the entire edge back 1/8" .
It is a decent pile of wood, I started another last week as I have moved further up and want to spend more time cutting and less carrying. As for size, we do have some decent sized Oak here, 2-3' is common in town, however none of it is on land that is family owned as it was long since cut down. It is rare to cut down anything over a foot now Those are just branches on wood the likes of which Jimbo knows.
-Cliff