Agree with Jimmy on the need to keep swarf from being ground into any stone dry.
Sharpen a knife on a white ark and it soon becomes dark and will lose its cutting abilitys over time.
You need a vehical to carry swarf and with razors unwanted slurry away (unless at a point where slurry is usefull.
On my maintainance honing I use running water,is a 40 micron filter on the water return line which becomes black over about 10 blades,swarf? slurry?,maybe both.
http://i22.photobucket.com/albums/b3.../h20device.jpg