Hey guys, first post here. I built a joe2006 last semester for a mechanical engineering project and am pretty happy with the results. I have spent a good year lurking around on this amazing site. Such great info.
I was wondering if anybody has or could measure the stiffness at the tool for comparison. I am measuring a deflection .043" in the y (short axis) and .052 in the x (long axit) with a 20 lb load which equates to 465 lb/in and 384 lb/in stiffness respectively. The load is attached to a 1/2 endmill about 1.75 inches below the spindle.
These numbers seem pretty low compared to what I have read online. What are you guys getting?