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Fact #1. Humans have been using heat to join metal since ancient times. In the Iron age, metalworkers widely adopted the earliest welding practices. The early forge welders used partially smelted iron ore heated in simple furnaces and then hammered together. In the last century, technology has advanced the field of metalworking just like it has many areas. Now even the home artisan can easily join together a wide range of metals.
Fact #2. Blazing-hot temperatures at one's fingertips have a number of useful applications. A typical oxy-acetylene setup produces flame as hot as 6,000 degrees Fahrenheit. Military, industrial, and artistic outfits have used these systems for decades, manufacturing durable and expressive pieces.
Fact #3. Since all they do is burn two gasses, oxy-fuel torches are among the simplest and most versatile tools in the garage. Using the proper tips, they can burn through metal as thick as eight inches or more using pressurized oxidation. With proper care, they're a safe and straightforward way for skilled metalworkers to manipulate steel.
Fact #4. A simple blowtorch uses a bottle of pressurized gas and ignites it as it mixes with atmospheric oxygen. That will only get your flame up to around 3,500 degrees. Cutting torches differ in one crucial way. In addition to the pressurized fuel, an additional tank of pressurized oxygen is fed to the nozzle. This allows for the efficient burning of fuel gasses even more volatile than propane.
Fact #5. Following a few important rules helps keep everyone and their welding equipment from exploding. For starters, the acetylene itself isn't just collected in an empty metal tank. A solid absorbing material such as wood fibers takes up much of the space in these special reservoirs. Because acetylene is extremely volatile under pressure, acetone is used as a solvent medium to safely store the gas.