A U.S. Air Force F-16 Fighting Falcon fighter aircraft assigned to the 18th Aggressor Squadron takes off from Eielson Air Force Base, Alaska, Oct. 6, 2014, during RED FLAG-Alaska 15-1. RF-A is a ...

Not all knife edges are sharpened equally, but all neglected edges are pretty equally useless. So, our edge obsessives — the sorts who always regrind every factory edge to get them just right — ...

My dad gave me a big box of cold chisels, punches, and other stuff. Most of the tools are in pretty rough condition, with a mushroomed face on one end and a chipped edge on the other. Can I grind ...