I bought this as a present for a friend who's a bit handy in the kitchen and is no stranger to handling assorted gadgets like this, but they say the only part of this that is of any use is the mandoline. Following the sketchy instructions to the letter - after numerous attempts at making the crisps, adjusting the cooking time, how many are on the tray at once, the thickness of the potato etc, each attempt was a cosmic fail as they say it just doesn't work very well. Perhaps if there is a secret "knack" of getting perfect results, it should be described in the instructions? - as after an entire afternoon of trial and numerous errors it is now redundant in the back of the cupboard. Bit of a waste of money and an expensive mandoline.