A soldering iron and a soldering gun both melt solder, but they are built for different jobs. A soldering iron is a light, precise, lower-power tool made for electronics and fine work. A soldering gun is a heavy, high-power, pistol-shaped tool that heats fast and suits thick wires and occasional heavy-duty jobs. For almost all electronics and hobby work, a soldering iron (or a temperature-controlled station) is the right choice.
The short answer
Choose a soldering iron for circuit boards, components, and any precise or delicate work. Choose a soldering gun only for heavy-gauge wire, stained glass, or thick connections where you need a lot of heat fast and do not care about fine control. For electronics, a gun is too hot and too clumsy.
What Is a Soldering Iron?
A soldering iron is a pencil-shaped hand tool with a heated tip, used to melt solder into small joints. It is low power (typically 15 to 80W), lightweight, and you hold it like a pen, which makes it precise and easy to control on small work.
Most electronics soldering today is done with a soldering station, an iron paired with a base unit that holds an exact temperature. That temperature control is what makes an iron safe for heat-sensitive components. For more on what an iron does, see what is a soldering iron used for.
What Is a Soldering Gun? (And What Is It Used For?)
A soldering gun is a pistol-shaped, trigger-operated tool with a thick copper loop for a tip. It is high power (usually 100 to 240W) and heats to soldering temperature in just a few seconds when you squeeze the trigger, then cools when you let go. The classic example is the Weller gun that many people inherited from a parent’s garage.
Because it pushes a lot of heat fast, a soldering gun is used for:
- Heavy-gauge wire and cable, joining thick wires where a small iron cannot keep up.
- Stained glass, running solder along long lead or copper-foil seams.
- Sheet metal, terminals and large connectors, chunky joints that need a big heat reservoir.
- Occasional heavy repairs, where instant on-demand heat from a trigger is handy.
What a gun is not good for is delicate electronics: it is heavy, the tip is large, and it has no fine temperature control, so it easily overheats small components and lifts pads.
Soldering Iron vs Soldering Gun: The Key Differences
Here is how the two tools compare head to head:
| Feature | Soldering iron | Soldering gun |
|---|---|---|
| Power | 15 to 80W | 100 to 240W |
| Shape and weight | Pencil, light | Pistol, heavy |
| Heat-up | Always on, ready in seconds to a couple of minutes | Instant on trigger, a few seconds |
| Temperature control | Yes on a station (set an exact temperature) | No, on or off only |
| Precision | High, fine tips for small joints | Low, large tip |
| Best for | Electronics, PCBs, components, hobby | Thick wire, stained glass, heavy joints |
| Risk to components | Low with temperature control | High, easily overheats parts |
| Typical price | Low to mid | Mid |
The video below shows the practical difference between the two in use:
When to Use Each One
Use a soldering iron when
- You are soldering circuit boards or components
- The joints are small or heat-sensitive
- You want precise, repeatable results
- You do electronics, repairs or hobby builds regularly
- You need to set an exact temperature (use a station)
Use a soldering gun when
- You are joining thick or heavy-gauge wire
- You do stained glass or sheet-metal work
- You need a lot of heat for big joints
- You only solder occasionally and want instant heat
- Precision and component safety are not a concern
Which Should You Choose?
For most people the answer is a soldering iron, and for electronics specifically, a temperature-controlled station. Match the tool to who you are:
- Electronics, Arduino, repairs, beginners: a soldering iron or station, every time. Start with our best soldering station for beginners, or the YIHUA 937D+ as a solid first iron.
- Fine SMD and precision work: a station with a fine tip, never a gun. See best soldering iron for electronics.
- Stained glass, heavy wiring, occasional big jobs: a soldering gun makes sense here.
- You want one tool for everything: get an iron or station. It does 95% of jobs the average person needs; a gun is a specialist add-on, not a starting point.
Still deciding between a basic iron and a full station? Read soldering station vs soldering iron and how to choose a soldering station.
Heat Gun, Hot Air and Torch vs Soldering Iron
People also compare a soldering iron with a few other heat tools. They are not interchangeable:
- Heat gun: blows hot air over a wide area. Used for heat-shrink tubing, stripping paint and some plastics, not for making solder joints on a board. A dedicated hot air rework station is the tool for SMD reflow, not a paint-stripping heat gun.
- Hot air rework station: precise, temperature-controlled hot air for removing and replacing surface-mount chips. It complements a soldering iron rather than replacing it.
- Blowtorch: open flame, very high heat with no control. Used for plumbing and jewellery, never for electronics.
In short, of an iron, a gun and a torch: the iron gives the most control and least heat, the torch the most heat and least control, and the gun sits in between. For electronics you want the controlled end of that scale.
This second video walks through a soldering gun in use so you can see how it compares to a pencil iron:
Frequently Asked Questions
What is the difference between a soldering iron and a soldering gun?
A soldering iron is a light, low-power (15 to 80W), pencil-shaped tool for precise electronics and hobby work. A soldering gun is a heavy, high-power (100 to 240W), pistol-shaped, trigger-operated tool that heats fast and suits thick wire and heavy joints but is too hot and clumsy for delicate boards.
Is a soldering gun or iron better for electronics?
A soldering iron, ideally a temperature-controlled station. Electronic components are heat-sensitive and joints are small, so you need fine control and a small tip. A gun has no temperature control and a large tip, so it easily damages parts.
What is a soldering gun used for?
Heavy-gauge wire, stained glass, sheet metal, large connectors and occasional heavy repairs, anywhere you need a lot of heat quickly and precision does not matter.
How hot does a soldering gun get?
A soldering gun reaches full soldering temperature (well over 400°C at the tip) within a few seconds of pulling the trigger, thanks to its high wattage. The trade-off is that it runs hot with no way to dial the temperature down.
Are soldering guns worth it?
Only for the right job. If you work on thick wire, stained glass or heavy joints, a gun is genuinely useful. For electronics, hobby builds and general repairs, a soldering iron or station is the better buy and will cover far more of what you do.
Can I use a soldering iron instead of a gun?
For almost all electronics and hobby work, yes, and you should. The only time you really want a gun instead is for thick wire or large joints where a small iron cannot deliver enough heat.