found this quite useful if anyone else was wondering how it works "Woody tells us how it works: “If you swipe over the Grind Strip with part of your hand as you move the record, the movement will be broken up as so will the sound, like a fader click. For example, swiping over one button will break the sound into two parts (like a tear), swipe over two buttons and you get three sounds, three buttons give you four sounds and so on. The more pressure you apply with the swipe, the more defined the sound. This all allows for some very intricate and controlled faderless scratches. And the beauty is that it’s all using just one hand, so you still have your fader hand free for extra fader clicks, cue points, mixer effects or whatever you like. There’s tons to be explored (if you’re as geeky as me!).”