[armo]

Hi, all. I´m from Brasil and I´m trying to setup a small studio to work with glass. Since I don not have access to any kind of surface mix burner, I bought one that is used for brassing or welding copper tubes. Now the problem: I do not know why this torch keeps popping (and it is a louding pop!) every time that I lite it up. Normally I start with all gas valves closed and open the butane valve, when I lit the butane ist happens, a loud pop. I looked here but since english is not my first language possible I´ve missed it. Can anyone help me on this subject?
Alfredo