Hi Gema Lay
Great question
For MIG, use 308L/309L wire with tri-mix gas. C25 works for non-critical stuff but not ideal tig gives the cleanest welds, use 308L filler and 100% argon. worth investing if you will do more stainless stick can work with 308L rods, but not great for 2mm material prevent sugaring with back purge or flux and use stainless brush or pickling paste after welding. for stainless to mild steel, go with 309L
Good luck with your project
