Hi, I have to cut out a sheet metal about 120cm in length on my car and weld what new one in. Stupidly, underneath the veins run to the backlights in a plastic corrugated pipe. How do I protect them from the probably occurring spark flight while cutting out and welding? It is a sheet metal channel of about 7cm width. Is there a strip of a fire cover enough, or what do I take best? Greetings Chris