Watch this video and more on WelderSkills
This is how I hurt myself with a magnetic drill and what I could have done to prevent it. This video contains a simulation of equipment malfunction, so definitely don't try this one at home.
Sam removes a bearing with a gouging tip and more in this real world repair video
Part 2 of Sam's Brush Hog Repair Video using a Cutting Torch, Gouging Torch, and an explanation and demonstration of "Texas TIG"
Part 1 here:
Repairing a brush hog with a torch, grinder, and stick welder.
Part 2: https://welderskills.vhx.tv/videos/brush-hog-repair-part-2-0f-2-produce