Like "No, I do not sharpen the lances, but you could a few times. I set the lancet devise for the deepest strike, I have been doing it so many times and so long I do not really feel it, some times have to pop my finger 2-3 times but I always run hot water over my finger/hand first and I am on all sorts of blood thinners for heart disease, 5 heart attacks. The key is to keep everything clean, I use a lot of soap, alcohol wipes as I go along on all my equipment. PS. I only stick my right hand because I been playing at playing guitar about 40 years and all the little puncture holes get caught and torn by the strings if I test on my left hand. I wonder if any other guitar players have this problem?"