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Arc travel speed faults - Beginner welders tend to move the rod too quickly, especially those who are transitioning to arc welding from another welding process. The pool of molten slag is wide, tall and bubbly, and shouldn't be mistaken for the weld pool! The weld underneath the slag will be about half the width of the molten slag pool, and it takes longer than might be expected to build it up. Experienced arc welders say they can see the weld through the slag pool (they say it is darker…

from Popular Mechanics

Master Basic Welding Skills: A Step-By-Step Guide

Welding is a delicate art, but once you learn it, ordinary steel becomes a blank canvas for invention. These steps will help you with any welding project.