I would first like to thank everyone for this site as it is very informative. I am backyard car builder and have mig welded for quite a few years. I have always depended on someone else or gotten buy without oxy welding. I am saving up for Tig but feel a good Oxy set up is essential. My question is what are tips or cautions that should be taken. I am not around body or metal fabricators to know what is dangerous or what precautions besides the obvious to avoid a dangerous situation. I read previous posts regarding backfire valves which was helpful. I guess I am looking for that tip on what not to do from a seasoned pro. I don't want to hurt myself. Thanks Brian