My old master builder before retiring and knowing he was going to retire he did his last 2 or 3 frames and repairs using regular propane gas with oxygen, as for the torch the only thing he told me was that he used a bigger tip and with ox/acet. But never told me the size of the tip or any other detail. As for the brazing material he said he used bronce with like 25% of silver or 15%, cant remember.

Thanks for the tips GUY, I always wanted to know exactly the torchs to use, beside i'm scare to hell of gas and fire hehehe