Learn about the only refueling stop in the 50-year service life of a USN Aircraft supercarrier; the refueling and complex overhaul, or RCOH. Every system gets either overhauled or replaced.

Jim Colt of Hypertherm discusses different options for cutting tools, machines, ratings for various processes, and pierce/production ratings.

From Harper College in Palatine, IL - Jim Colt of Hypertherm discusses the various ways to control fumes in your cutting operation.

From the metal fabrication labs at Harper College, Jim Colt of Hypertherm gives an overview of plasma cutting duty cycles; environmental factors, capabilities, and other things to consider.

Jim Colt, of Hypertherm, discusses air plasma torches, machine torches, the differences between them and the rate of wear for various consumables.

Samantha Noland from nexAir provides a brief overview on the benefits of automation in a shop environment.

Samantha Noland of nexAir provides a brief overview of the physics of welding gases.

Gas cylinders can pose a huge safety risk if they are cared for and/or handled improperly. Samantha Noland of nexAir outlines a few best practices to make sure you are handling your cylinders safely.

Samantha Noland of nexAir discuses what attributes CO2, Argon, and a combination of the two bring to the GMAW process.

Todd Bridigum, welding instructor at Minneapolis Community and Technical College, and author of, "How to Weld," tackles the basics behind pulsed-spray transfer mode.

Todd Bridigum, welding instructor at Minneapolis Community and Technical College, and author of, "How to Weld," explains the art of aluminum GMAW.