I consider myself a very careful, safety-aware person but still have had my share of freak accidents and moments of stupidity and have nearly lost two fingers. As you might imagine, neither finger incident was caused by a machine that ever really got my attention as dangerous....one being a drill press and the other being a pneumatic clamping system. The ones that scare the hell out of me are still a table saw, chain saw, and 12" compound miter saw. I won't even use my radial arm saw, every time I turned it on it tried to kick across and eat one of my arms off. Router tables and especially the big, high-horsepower shapers make me nervous too because when you least expect it they bite hard and things go BOOM, usually with the tendency to suck the operator's hand across the spinny maiming thingy in the process. Nearly had a planer kill me one time, was planing down some rough Alder and the knives hit a thin spot and then grabbed a hard spot and sent the board straight back out of the machine through the shop, through several sheets of plywood leaning against the wall, through the wall, and out into the back yard before I could blink. Later that night when I took off my jeans to shower I found the torn side belt loop the end of the board had caught on its way back out the machine, I got pretty nauseated realizing that it could have cut me in half at the waist and not even slowed down. Fortunately I had obeyed the basic rule of operating a power-fed machine like that and had stood to the side just barely enough. Also nearly got cut in half by the safest table saw in the world, known as a Saw Stop. There was a piece of glass inexplicably laminated into the half-inch plywood I was ripping and a 2x3 square of plywood shot back at me when the blade hit it, catching me right below the ribs. If it had been 3/4" it might have done me in but I soaked it up, only have a nice scar on my belly from torn muscles but oddly it never broke the skin at all. A bench grinder is another tool that will mess you up any number of ways if you give it the least opportunity. All these tools will do amazing work for us but like all dangerous things, they have zero tolerance for carelessness and even with the utmost care things can still go wrong.