Yeah, I may or may not have access to an OA set up... I need to make a call. If I can I will use that. I hear you loud and clear on the 1lb bottles of o2 that stuff doesn't last long. When using only MAPP, what do you mean by not proper brazed joint?
Ultimately I want to build multiple frames, and maybe build for others (I can dream right) I will have an OA or OP set up in the future, but for now with my students buget I will have to make due with what is available to me.
Thanks for your input, you have answered my questions in the past and as alway you are very helpful.