Hey Walt, I built my own grinder, it wasn't to hard to do. I do have a good backround in machine shop thought and also it helps to have a mill/drill, lathe, saw in your shop. Boy, if you lived closer, we'd absolutely team up on this thing and build you a nice one. That being said, not even sure where you live but I'm sure it's not Deer Lake Penna, I'd love a mid-winter project. Also, here where I live, we have a steel graveyard(M.B. Glick LLC) where all the old steel and machines from days-gone-by go to rust away. 10 acres of nothing but aluminum, stainless, brass, tool steel, carbon steel, as well as all kinds of plastics and composites mostly used in industry all laying in a 10 acre field. It's all sold by the pound, so you can get stuff dirt cheap. There must be something like that near you, do some research and maybe you'll get lucky, I hope so anyway! Walking through those fields is like being a kid in a candy store.
Anyway, back to your issue, if you like, I could send you a copy of my prints that I built from. They are easy to understand and it comes with a parts/piece list. You do need to buy bearings, pulleys, bolts, etc. As with anything, the more accuracy you can put into, the more your going to get out of it. They say you can do these grinders without a mill, I'm not sold on how accurate that could be, but many have done and they work wonderfully.
Well, let me know if I can assist in anyway, not sure how, but we can get something going.
ps. Where you located anyway?
Wayne