The 98 cents’ worth of plastic shims that came with your new $1,800 semiauto might be the most important part of the whole shotgun. Stock shims let you fine-tune cast and drop to get a perfect fit—and ...

Q. I need to install some doors at my house. I've never done it before. A friend told me to make the rough opening for the door and frame larger than the actual door frame dimensions. This seems odd ...

Not everything in life fits properly when you build it. And lots of things eventually get out of whack in the years after they're built. Fortunately, the time-tested solution is a simple one: You want ...

The starting idea was to reduce the weight of machinery, e.g. in aeronautics, by using composites instead of stainless steel. The main difficulty was to preserve the stiffness properties of the ...