As he notes in his writeup, the properties of copper which are most enticing, such as high thermal capacity, make welding it all that more difficult. His home-brew method of spot welding is ...

Get creative with this DIY welding machine hack! By using a spark plug and basic materials, you can build a working welder right at home. This smart and simple invention shows how resourcefulness ...

When Phelps Dodge Corp. set out with cash in its pockets to woo and master rich, independent United Verde Copper Co. of Arizona (TIME, Feb. 18), most people thought it was the only suitor.