Outdoors,
last year about this time I had the same inquiry. I didn't get much response either, but I pushed ahead and decided to do my own research. By research and experience, I find that the Bernz-O-Matic dual tank outfit (about $50) using Mapp gas and oxygen produces sufficient heat for me to successfully SILVER BRAZE. This was very successful when I am brazing a bolt onto my short tang for a hidden tang knive. I've even welded with it, but granted you are restricted to the thickness of the metal being joined. Others are correct when they indicate that it has limited uses. It all depends what you plan on using it for. I like it for silver brazing and it worked perfectly. I concur that Oxy-Acetelene guys are right, it will do a number of functions around the shop. What I found is the cost factor of maintaining this unit vs. the amount I really use it. Just my .02 cents -- Dan