While testing the new sawmill, we immediately noticed that it had the same propensity to shake, just not as violently. Of course my assumption is that the more you run it shaking, the more the metal will flex and eventually it will shake just as violently.
After double checking everything and trying in vain, the dealer placed his foot on the ejection side riser post. The movement of the bottom of these posts was my "theory" on most of the headshake.
The amount of play at the bottom allows the entire head to flex as the blade grabs wood. When the flex is pulled to it's situational maximum, the blade lets go and swings back. Of course this happens a bit faster than it sounds. But, we did show that by keeping that part from moving, the head stopped shaking and actually made decent cuts.
So, I temporarily clamped angle iron to the area where the riser post and the bottom of the mill frame make an inverted T. Tomorrow morning we are going to go back out there and try to cut up the remaining logs. Instead of building some overboard solution, I just took some metal, flattened it out, drilled three holes, threw some screws in it, and have what you see in this picture.
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