I can't remember if I made the clamp from Dean's design or some other plan.
Brian, there are only four items there that I bought, the rest are scrounged or gimmees.
I removed the chuck from a worn out electric drill a few years ago and it threads onto a grinding wheel arbor that I bought at a hardware store. The other two bought items are the hasp and hinge on the feather clamp.
Here is the type of arbor like I used. Didn't buy it here, got it at the local hardware store. You can see the washers and nut in the first picture.
http://www.grizzly.com/products/G5550 I am an electrician and hobby woodworker so all the other stuff was discarded material that I pack-ratted. The motor was a throw-away with an open winding that I took home and fixed. Switch, box, and cord were throw-aways from construction sites where I worked. The wood was bought but was leftover from other woodworking projects. My total cost is probably less than $10.
The reason I took the time to make a stand-alone grinder is I got tired of resetting my drill press everytime I had a different task to do with it.
Dennis