This is a close-up view of porosity in a TIG weld. We will examine some of the causes for weld porosity and ways to prevent it. Q.When I TIG-weld a patch panel into an old car and then grind the weld ...

This shows a plug tack-welded into place, after using a step drill to remove a porous area in the weld. Last time we looked at some of the causes of weld porosity, and some ways to prevent it. This ...

In one room, kids banged the ends of sheet-metal toolboxes into place with hammers. In another, they kicked up sawdust on a table saw, glued and sanded as they crafted wooden stools. In a third, they ...

We may receive a commission on purchases made from links. Welding leaves behind more than just a strong joint — it also leaves a lot of mess. To clean it up, many welders reach for a chipping hammer ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...