Mikoyan-Gurevich MiG-3 (1940) was a Soviet interceptor and fighter aircraft used during World War II. It had been designed for high-altitude combat but combat over the Eastern Front was generally at lower altitudes where it was inferior to other Soviet fighters.
MIG welding is one of the simplest and most universally used welding techniques practiced today. Its versatility makes it suited for a wide variety of applications, making it a popular skill for welders to learn. Even with the relatively simple operation of MIG welding, there are a number of guidelines to keep in mind for achieving the best weld possible. See more at: http://www.weldingschool.com/blog/welding/infographic-mig-welding-tips/