Here's what occurs inside the saw when the brake is activated. When skin contact is detected, a 150-pound spring deploys an aluminum brake into the blade path, bringing it to a halt in 5 milliseconds or less.

Here's what occurs inside the saw when the brake is activated. When skin contact is detected, a 150-pound spring deploys an aluminum brake into the blade path, bringing it to a halt in 5 milliseconds or less.