I.O.Shen Electric Knife Wizard 1 "Potential fault" Miss Huxley 02 January 2017 I have had my Knife Wizard for about 18 months. Initially I could not fault the sharpener. It was used every couple of months and my knives where so sharp. However, just before Christmas the on/off rocker broke. For the amount of times this product has been used, it is really disappointing. I can see from previous reviews, I am not the first person this has happened to. I am now left with a useless sharpener. A note from the team Thank you for placing your review. We're sorry to hear you'd experienced this problem and we'll be in touch shortly to help.