The Army has developed a new technique for cutting rifled grooves inside 155mm howitzer barrels that officials say could extend cannon life, improve performance and reduce manufacturing costs.

While Valve can't promise that there won't be Steam Machine issues, it's at least giving you a clear way to communicate them.

New laws in California and New York might stop anyone from 3D printing guns — and create entirely new kinds of surveillance.

One Friday a few months ago, when Jim Howe, my boss at Howe’s Welding and Metal Fabrication, asked me to drill 2 ¼-in. holes ...