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This video explores the critical question of whether weld preparation truly matters when MIG welding over mill scale. Watch as the presenter conducts practical tests comparing prepared and unprepared surfaces, demonstrating the setup process, performing various welds, and conducting thorough strength tests to determine the impact of mill scale on weld quality. Learn about the tools needed for proper surface preparation, including specialized discs for removing mill scale, and discover the significant differences in weld performance. By the end, gain clear insights into best practices for MIG welding and understand when surface preparation is essential versus when it might be less critical, with a concise bottom line conclusion that summarizes the key findings from this hands-on experiment.
