As an Amazon Associate, Garage Welding may earn from qualifying purchases. This does not change the price you pay.
The CHENJIN 2-piece soldering iron head set contains two wide, triangular flat tips, one 16 mm and one 20 mm, listed for leather work and plastic repair such as bumper jobs. This CHENJIN soldering iron head review is based on the Amazon listing, not hands-on testing. They are worth considering for wide heat-contact jobs if they fit your iron; they are not fine electronics tips.
Quick specs at a glance
| Item | Per the listing |
|---|---|
| Quantity | 2 tips |
| Sizes | 16 mm and 20 mm |
| Shape | Triangular flat head |
| Listed use | Leather products, automotive and plastic repair |
| Material | Metal head, described as corrosion and heat resistant |
| Compatibility | Depends on your iron; not universal |
The listing does not give a thread or shank specification in a form we can verify, so match the tip to your tool carefully.
Check current price on Amazon →
What it is and who it suits
A wide triangular head spreads heat across a flat area instead of a single point. In practice that makes it useful for heat-pressing, smoothing and sealing jobs: ironing a plastic seam, flattening a repaired bumper edge, embossing or smoothing leather, or heat-staking small parts. It is a different tool from the conical or chisel tips used on circuit boards.
It suits hobbyists with a heavy-duty soldering iron or heat gun handle that accepts replacement heads. It does not suit fine electronics, SMD work, or any iron whose heater cannot supply enough heat to warm a 16-20 mm head.
How to check they fit your iron
- Handle and mount: the listing says these tips are not universal. Check how your tool attaches the head (threaded, push-fit, or screw clamp).
- Heater power: a bigger head needs a stronger heater. A small 30W pencil iron will take a long time to heat a 20 mm head, if it manages at all.
- Thread and shank size: compare with your existing tip or the manual before ordering. If you need a replacement for a branded iron, see our T18-K tips review for how tip families differ.
- Material to be worked: for plastic repair, identify the plastic type, since different plastics need different temperatures and may give off fumes.
- Temperature limit: keep within the tool’s stated maximum.
Pros and limitations
| Pros | Limitations |
|---|---|
| Two sizes cover small and larger surfaces | Compatibility is limited and not clearly specified |
| Wide flat head spreads heat | Needs a strong heater and slower to heat |
| Useful for leather and plastic smoothing | Not meant for electronics soldering |
| Compact and easy to store | Some buyers question long-term durability |
Check current price on Amazon →
Care and safety tips
- Fit and remove tips only when the tool is unplugged and fully cool.
- Tighten the mount securely so the head does not wobble or lose contact.
- Clean oxidation off the face with a brass wire brush or a damp sponge, then wipe on a little solder or tip tinner if the face is meant to be tinned.
- Use a heat-proof stand and keep flammable materials clear; a wide head holds a lot of heat. A heat mat is a useful surface.
- When working with plastic or leather finishes, ventilate and avoid breathing fumes. See also our plastic welding kit review.
Alternatives and related guides
- Plastic welding replacement cutter tip for plastic repair heads.
- Hakko FX-951 tips if you actually need electronics tips.
- YHDZSWGZS portable soldering iron for a small portable iron.
Frequently Asked Questions
Do CHENJIN soldering iron heads fit every iron?
No. The tips are not universal, and fit depends on the shank, thread or mounting method your tool uses. Check your tool’s manual or existing tip, and match the diameter and attachment before buying.
What are 16 mm and 20 mm triangular tips used for?
Wide flat heads spread heat across an area, so they suit smoothing, sealing or ironing tasks such as leather work and plastic repair. They are not designed for fine soldering on electronics, which needs smaller pointed or chisel tips.
Can I use them for plastic welding?
They can be used to heat and smooth plastic repairs if your tool supports them, but you must know the plastic type and keep temperature within safe limits. Ventilate, since heated plastic can release irritating fumes.
How do I make the tips last?
Keep the face clean, avoid overheating, and do not leave a hot tool idle. Remove oxidation with a brass brush or damp sponge, and store the tips dry. Replace tips that warp, pit or no longer heat evenly.
Conclusion
The CHENJIN heads are wide flat replacement tips for heat-pressing, smoothing and repair work rather than circuit soldering. Confirm that the shank and mount fit your tool before you order, and expect a basic accessory.
Check current price on Amazon →
