I stopped into Low,s and Menards. Both places have 2 kins of brazing torches. One uses MAPP gas only and the other has 2 small tanks...one MAPP gas and Oxygen tank. The one with Oxygen claims to weld steel to over 3/16 inch thick. I think the temp can reach well over 3800 degrees on the 2 tank model. The price was $39 for MAPP only and $49 for MAPP & Oygen. I could not locate any silver solder yet to read about it. The tanks was about $8 for Oxygen and $6 for MAPP gas. The first set of tanks comes with torch. Also at Menards the had aluminum welding rod with flux on it ....to be use with a DC welder? The search goes on! Capt,n