I recently bought a coldsteel trailhawk and am really pleased with it. I have never owned and axe before never mind a tomahawk so when it comes to sharpening one Im kinda lost. Ive seen many stones and various things which to me look as though they take quite a lot of skill to learn to do. Im prepared in the long run to do just this, however would like to know if there are any "desktop" like sharpeners, (the one you just place the blade and pull through) on the market, if so name brand etc. 
