This video shows how I make a compact 2" bore air cannon with a coaxial piston valve. To understand how these valves work examine the third animation in the following link: <a href=" I also go into ...

In its housing forecast for the year, published in February, Canada Mortgage and Housing Corp. predicted a trade war between ...

For well over a century, copper mines and their structures dotted the landscape in Michigan’s Upper Peninsula. I was born there and several generations of my family worked in the mines. The last one ...