At one time or another it's happened to all of us. While working in the shop late at night trying to finish a project, we discover a part that will need to be repaired by welding. Luckily, some of us ...

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 ...