I have bought tons of sharpening equipment, ranging from high quality systems like KME to simple files. Lately, I seem to always use the RADA wheel sharpener for just about everything. House knives, hunting knives, broadheads, everything. This thing works great and lasts just about forever. It gets any 2 blade hair shaving close quickly. Maybe not as sharp as a sharpening system, but pretty darn sharp. Very convenient for at home and in the field. When I sharpen single bevels, I stil use the RADA to take the burr off gently. It works great. Best yet, it is about as inexpensive as they come. Now I shoot a little heavier bows than some, so penetration isn't normally a problem for me and others mileage may vary. I am getting good results with this little device that fits easily in your pocket. Much better than I get with carbide type sharpeners. It really shines when sharpening the simmons type heads. Well, I just thought that I would share. I know that there have been other posts on the topic. What can I say, I'm a slow learner.