Solder is a metal ,specially alloyed to be used to fix or weld together other pieces of metal.
How to use it would depend on the application and the exact metals being used
In general no because its easy to overheat the board and lift pads or even entire traces.However where the board has large areas of copper soldered to metal chassis lugs, if you need to unsolder such connections the only tool likely to be able to apply enough heat is a soldering gun.
The main tools for soldering include a soldering iron, a stand for the soldering iron, and solder. You'd likely use other tools such as brushes, picks, heat sinks, solder wick, desoldering irons, etc.
Soldering is more or less permanent unless you break it with a hammer or melt it with a torch.
cold soldering is when the soldring part is not well soldard or the soldring has being disjoint.
An electric heating element heats the tip just above the melting temperature of the solder being used.
There are many place to purchase a soldering gun for home use. The best place you can buy a soldering gun for home use is Office Depot. You can also find it online at Amazon.
From a soldering gun supply store
both
A soldering iron is a straight tool, sort of like a long screwdriver. A soldering gun actually looks like a gun or a drill.
Try soldering it on with a soldering gun
Soldering guns are used where more heat is needed than from the lower-power soldering irons. They can be used for heavy electrical connections, stained glass assembly, and light sheet-metal work. Typical soldering guns are rated at 100 to 240 watts power. A gun may include a two-stage trigger to give two heat settings 📷
Solder guns as a rule have wider tips than soldering irons/soldering pens.You might not be able to reach just the spot that you want to with a solder gun given the size of the components, and how tightly packed they are on a modern circuit board. Many modern components, such as integrated circuits, will be damaged by the high heat levels produced by soldering guns.
That is an electric soldering machine with a 'pistol' type grip, that switches on when you press the trigger.That is an electric soldering machine with a 'pistol' type grip.
soldering iron stand use for the electricians to easily the soldering iron make stand
Shooting solder at a special solder shooting range
Soldering iron is used in heating the metal for soldering. If you want to learn more about soldering iron visit en.wikipedia.org/wiki/Soldering_iron.
When you use a soldering iron you would be soldering some kind of metal frame or something because soldering irons are irrelevant to soldering iron. Sorry, not applicable.