[Farrell In Vancouver]

Flop I have a question. When showing shots of your sheet metal patches, it is evident that you work and finish weld one edge at a time. Subsequent shots show the original tack welds and the patch is finished one side. Can you educate me on this method?, as I have always tacked all around until the joint is complete, (keep the heat down by spacing the welds) then finished the grinding/filing until I am happy.