Welding sheetmetal coated with zinctec

Not sure what's exactly in zintec, but this is the filter I use under my hood when welding questionable material. Miller LPR-100 Half Mask Respirator w/Odor Relief ML00994

 

Welding ink can kill you apparently. read up on welding galvanized metal. It might not be the same thing, but I would want at a least filtered air and maybe even an external air source.

 

Not Good, grind it clean or...........external air source helmets are expensive. Depending on what welding method your using and where can make a difference........I've used a small fan at low speed either behind or off to the side which will keep the fumes away while also keeping the fresh air near your mask...........Obviously some shielding gases may be effected..........Arc is easy to do with some air movement near the weld zone.