Tig Welding Carbon Steel - 309 filler rod - YouTube
Blue Demon ER70S6 X .035 X 11 LB MIG/GMAW Carbon Steel Welding Wire, All Position, Low Spatter, Formulated to Provide Porosity-Free, X-Ray Quality Welds - Arc Welding Accessories - Amazon.com
0.045" x 36" WeldingCity® ER70S-6 Carbon Steel TIG Welding Rods