This is a milestone for me: It's the 250th column since the start of the Professor Hammer series in 1995! One of the things I really enjoy is the follow-up I receive from readers, who often have some ...

Vanpowers sent me this solar generator and said do your worst. They must be pretty confident in their product to trust me to ...

Did you ever see a thin metal tab bonded to a battery terminal with little pock marks? That’s the work of a spot welder. Spot welding is one of those processes that doesn’t offer much in the way of ...