My apologies if this has been posted before, but I found this thread on another forum and thought the photos posted in it would be of interest to some that frequent the Cantina:
I've had real good results refinishing cues with MinWax Wipe On-Poly. I use lint-free rags folded into pads. I pour some into a container, dip the pad and apply in long overlapping strokes. I find it goes on best in the 60-75F range (at least for me). Like many polyurethanes, it does yellow...
Here are some links to get you started:
http://www.chriscrawfordknives.com/cck/bench/default.asp (also has a nice shop tour on his site: http://www.chriscrawfordknives.com/ )
Good luck with the project
These links maybe of some help:
The KMG- This machine was designed with the knife maker in mind. It should give you some ideas.
Deker's build- Interesting read about building a version of the KMG
Homemade grinders- Lot of links and photos