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This video uses a practice plate to demonstrate open root settings, techniques. also shown are hot pass, fill and cap. Arc shots, rod angle and more. Stick welding SMAW 6010 xx10
12 inch pipe with 35 degree bevel.
Open root welded with 5/32" XX10 electrodes
fill and cap with 3/16"
1/8" 6010 flat padding on 1/4" mild steel
Downhill root with XX10 rods are very common in the oil and gas industry.
A very valuable high paying skill is to be able to make good roots like this.
In pipeliner terms, its called "the bead"