Clean is 100% right- also, no air flow from shop fans to move shielding gases away from the TIG torch cup- and any spatter inside the ceramic cup gave give the Argon (or 50-50 Argon-helium for Titaniam and Copper TIG work) a turbulence, like the swirly from a bathtub drain, whic AIN'T GOOD-The 1010 or 1018 analysis is 100% correct- and all cheap Chink made metal stuff is very ductile (think Salt Water Taffy here troopies)- go with an AWS code, spark test, and 12L14 screwe machine stock or any leaded (for a greater machinability index) is Poison to any Weld- no matter the joint configuration or process (TIG, SMAW or MIG)--I "made my bones" not only in power plants doing root pass on schedule stainless pipe with backing rings with both TIG and SMAW, but also doing custom biker frames (Harleys Only- don't even think about bringing a "Rice Rocket" into that shop on Western and 10th--) with a Miller 300 amp Gold Star, Linde water cooled torch, 100% argon, foot rheostat control and soft-start on the Hi-Freq- a Steinway TIG welder (before the square wave series came out)--best practice for TIG welding- be an accomplished gas (oxy-acetylene- No MAPP) torch hand and welding, brazing and silver soldering first--IMO
