Are you wondering what type of torch to use to do jewelry soldering? Possibly casting? Maybe precious metal clay (PMC)? Please check out this wonderfully informative article at Jewelry Artist Magazine (formerly Lapidary Journal).
“Heat is the catalyst and gas is the fuel that boosts the torch to perform this alchemy. A basic torch using kerosene, a blowpipe, and lung power will solder, but today’s multi-metal jewelers expect their torches to match their own versatility.
With so many torches on the market, a first-time buyer can be quickly overwhelmed by the sheer number of decisions that have to be made. Choosing a fuel, fitting the right tips, and determining the type of flame you need are just the beginning. To make decision-making tougher, all torches look pretty much alike. They have two open-ended tubes for the attachment of two color-coded rubber hoses, conducting air to one and fuel to the other. They are either single-fuel or a combination of oxygen and fuel, which tend to be hotter. Some torches accommodate different fuels simply by changing the tip. Each gas produces a different flame. Which brings us to the burning question: which torch will produce the flame power needed to get the job done?” More…
Here is a great video on choosing a torch also!