Hey I was DC welding/practice on steel last night for the first time and pretty soon after I started i kept getting brilliant flashes like the SUN!! At first I thought it was the filler rod (just mild steel filler 3/32) cause it kept doing it when I dipped it in the pool..but it seemed to do it randomly as well. Maybe my auto-darkening welding hood is not working. I did not have a problem doing AC welding. I sharpened my rod with the chem-sharp and wiped residue off with a rag....dunno if any of that would cause those brilliant flashes.