I am about to do a 6G weld test on carbon steel pipe using TIG (4") that is going to be X-rayed My question is- When I have started welding and then stop before starting again do I need to cut off the black burnt end of the TIG wire or can I proceed without doing so, as I am not sure if the bur...

I am about to do a 6G weld test on carbon steel pipe using TIG (4") that is going to be X-rayed My question is- When I have started welding and then stop before starting again do I need to cut off the black burnt end of the TIG wire or can I proceed without doing so, as I am not sure if the bur...