I want to learn to weld as a hobby. All of my reading says learn gas welding first. So I bought a unit have connected everything and am ready to go. In none of my books do they talk of flux when welding mild steel ( at least not that I remember ). Yet the guy at the welding store gave me flux coated rods to start with. Do I need flux or not. If not what would happen if I used these rods? One other question. My system is a Harris with No. 5 tip. Tha manual says set gas pressures to 5 psi on oxy and acet. This is easy with the acet gauge with a low range scale. The oxygen gauge however is a 25-100 psi Gauge and thus the lower level of the scale is limited. It just about starts at 5 psi so setting this accurately is limited. Is this an issue or do you simply do the fine adjusting by trying to get the neutral flame.
I apologize if these questions are really stupid but I want to learn the correct and especially safe method.