With this device, it gets really everyone (even me!) Out to get knife scissors sharp again. The various fits and angle attachments there is a right for each object. Then simply insert the grinding belt (here are 2 times 3 with various grain each) included. Plus, there's a foolproof instructions, so that really nothing can go wrong.
If you're thinking that these products must be oversized, which I can only say: The device is small and portable, easy to store in the supplied tool bag and can be quickly brought out when needed and be built. I have sharpened all my knife (15) and scissors (2) once and have it just 20min needed. The price of the new purchase of these would have the price exceeded by a multiple.
Who is not yet convinced, should watch the intro by the manufacturer and the test reports on Youtube to time. The are consistently compelling and helpful in making a purchasing decision.