This hydrogen and oxygen generator is perfect if you’re looking for a safe, reliable unit for your soldering and casting needs. This unit uses electricity by utilizing hydrogen and oxygen, without using a tank, creating a safer, cleaner and more economical fuel. The control knobs will adjust the flames to the size you need. The check valve will help keep the machine a constant pressure while the machine produces gas.  For added safety, release switches can be used for overpressure.  This machine will give you at least 10 years of use for welding, soldering, casting and any other delicate jewelry repairs.  Make the investment today by visiting Stuller.com/tools.