The table saw — screaming now at tens of thousands of revolutions a minute — makes easy work ripping that board. In the workshop, the warm scents of helpless grain giving way to a blade's teeth fill the air as sawdust falls to the floor. The tools, of course, have no awareness of their satisfying the senses. Their job is stone simple: Cut. Whatever comes, cut it in two. That includes wayward fingers and hands. It's steady work — even if it's not something you do all the time. Don't take our word for it. Here's Clive Couperthwaite. 'I've always loved working with wood. I like the smell of woodworking. To do this takes skill. And to do that properly, you need to have the hand coordination. And with Parkinson's, that is all gone.'