How sharp does your knife have to be? Do you need your edc knives shaving sharp or cleanly cut paper? I say why not with knife sharpeners like the edgepro, sharp maker, and all the other sharpening systems, free hand if your good at it. I'm no pro at sharpening but with an edgepro apex and sharp maker a tend to a fairly okay to good job at it for a newbie. All the different post I've read really help, all you have to do is listen to what other people are saying. Thank you all for your advice it does help.