Rolling Cylindrical Shape with Four Roller Machine - Welding, Level 5

This video lesson discusses using a four-roller machine to create cylindrical shapes in welding. The instructor explains how to use parallel line development to create the cylinder shape, how to divide the base into 12 equal parts, and discusses the different types of welding machines. 

The video features a practical demonstration of a four-roller machine with handles that can be used for driving or holding the workpiece in place. The rollers can be adjusted to increase or reduce the circumference or height of the cylinder. Proper alignment is necessary for quality results, and the distance between the rollers can be adjusted for varying thicknesses. The instructor explains how to load the workpiece onto the rolling machine, how to roll the cylindrical shape, and how to adjust the rollers to get a perfect circle. The video provides an introduction to the manual rolling machine and explains how to use it to create cylindrical shapes.