To minimize warpage and pull, tack both ends, then use a method called backstepping. Lets say you are making a 12 inch long weld. Start your first weld 3 inches from where you would normally end the long weld. When you've welded that 3 inches, go three inches in front of the start of the 1st weld and weld to the start of the 1st weld and so on. Tacking also helps. |