I've been working with Chris on this pattern. I cut one out at work (I run a laser) and got a chance to work on it this weekend.
There were a few changes that we've talked about that I'll be trying out in the next implementation. One of the changes that I suggested in the beginning, was to shorten the main upright plate a bit so that everything fit int a medium flat rate box from the post office. Shipping would be about $11 priority mail with delivery confirmation.
One modfication that I made right away, was to tab the main upright and leave an accompanying slot in the base plate. (Note: I'll be making the same modifications to the main upright and the base plate to incorporate the additional mounting the motor base).
I also made a similar notch on the idler arm. I expanded the idler mount more the original, but I'm not entire convinced that I needed to do that.
In the picture of the entire grinder, I didn't have long enough bolts on hand, and I left part of the spacer out, but put a different on in. That's why the upright on mine is a bit different than in Chris'. One change is to add the ability to have a work rest.
I want to make some changes and run another one. I'll be able to cut these and sell them for about $250 plus shipping.
Jamie