> Roy,Yes great tool. you MUST have one with temperature control loop.
> The machine for changing surface mount chips has a heat gun on
> both sides of the board. The nozzels move together. There is a
> temperature control. The company that makes them is called HART. You
> put a dab of stuff on the chip. When the stuff turns clear the chip
> will lift off. With the heat gun you preheat the bottom of the board
> and then go in for the kill from the top. I mount the board in a bench
> vise so it does not fall. Years ago people used a propane torch. I
> used to worry about hurting parts with heat until I saw a wave
> soldering machine and surface mounted parts being soldered in a
> toaster oven. Some heat guns also come with deflector tips to localize
> the air. The heat gun also works great with shrink tubing and bending
> plastic.
>
> John
>
If you block the outlet or inlet it must not get any hotter.
This allows for using reduction nozzles and precise temperature.
A goog unit is the steinel with lcd display.
ST