Why settle for an approximation when you can have a real soldering gun?! Bring this little baby to bear on your next PCB. Point, pull, and let the heater rip.
It's not so far fetched: A steady hand, a careful aim, an unsafe quantities of lead...soldering and firing a gun have an awful lot in common. Making your own is easy, all you need is an air pistol and a hand-held, battery powered soldering iron and you can make your own soldering gun.
Here's what I used to make mine:
Step 1: Disassemble soldering gun
I used a small Phillips screwdriver to open the plastic housing of the soldering iron and pry it apart. The circuit inside has a 51Ω resister, one small white LED and a socket for the heating element.
After sketching the circuit onto paper I desoldered the components and set them aside.