Hop David wrote: Good robotic hands would be very useful and could make loads of money. If making them is so straightforward, why don't they exist yet? Hop You can buy one at: http://www.engadget.com/2005/05/24/now-on-sale-the-dexterous-robotic-hand/ Or you can get help into building your own robotic hand at: http://www.engadget.com/2006/12/16/how-to-design-a-robotic