They attempted to restart an abandoned excavator whose engine had seized after water entered the cylinders. Freezing temperatures and repeated failures forced increasingly aggressive methods. At one ...

Many of us are comfortable using an oxy-acetylene torch, but sometimes we’re dissatisfied with our cuts. Here are things to check, and tips to improve torch performance: 1. Generic regulator setting ...

When a person learns how to cut metal and weld they open a new world of possibilities. The past articles in this series covered the most popular methods for welding, and now we'll look at some of the ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...