INSANELY HOT DIY Hot Air Soldering iron @ 15 Volts DC and 3.5 amps...PART II

Step 2 The fan is important

This style of fan compresses and forces the air out of the blower unit into and through a smaller opening such as the nozzle end of my DIY soldering iron. I had earlier made a fan that I thought would be good, but it dd not emit much air out of the narrow opening...I am thinking an air pump from an aquarium that has several internal diaphragms may be of use here...A simple 12 volt car air compressor would be great too, but they are too noisy, but worth a look at later.