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The 2 pack plastic welding tips are accessory tips in 16 mm and 20 mm sizes for a soldering iron gun, used to melt and press plastic together. Per the listing they fit a 5.2 mm shaft hole. They are not a full kit and do not include an iron, so check your tool”s tip mount before you order.
Quick verdict
Best for: DIY plastic repairs if you already own a soldering iron gun with a matching 5.2 mm tip hole.
Main limit: Fit. They do not include the iron, filler rods or temperature control, and brand details are not clear from the listing.
What the 2 pack plastic welding tips are
These are broad, flat-faced tips that replace the pointed tip on a soldering gun. The wider face spreads heat over a crack so you can soften the plastic, press it into the seam and smooth the weld line. The listing describes them as corrosion-resistant, high-strength metal.
Specs at a glance
| Item | Detail (per the listing) |
|---|---|
| Quantity | 2 tips |
| Sizes | 16 mm and 20 mm |
| Fit | 5.2 mm shaft tip hole |
| Material | Corrosion-resistant, high-strength metal |
| Not included | Soldering iron gun, filler rods |
| Brand, warranty | Not clear from the listing |
Fit and compatibility checklist
- Measure the tip hole or read your tool manual. The listed fit is 5.2 mm, and soldering guns do not all use the same mount.
- Check your iron”s power. A weak iron may not keep the larger tip hot enough.
- Identify the plastic. Many plastics weld well with heat, but some burn or do not bond. Look for a recycling code or test on scrap.
- Decide whether you need filler rods or hot staples, which this set does not include.
Which size to use
- 16 mm: narrow cracks, edges, and smoothing a visible weld line.
- 20 mm: wider cracks and seams.
How to use plastic welding tips safely
- Fit the tip fully and tighten it. A loose tip heats unevenly.
- Clean and dry the plastic and sand or V-groove a crack if the repair needs it.
- Practice on scrap of the same plastic first.
- Let the heat soften the plastic and guide it into the seam with steady pressure. Do not force the tip through.
- Let the repair cool fully before you sand or load the part.
- Clean melted plastic off the tip while it is warm.
Safety: Work in a ventilated area, because heated plastic gives off fumes, and use heat-safe gloves. Do not rely on a repair for fuel, drinking water, pressure or structural parts unless the part and repair method are rated for it.
Pros and limitations
| Pros | Limitations |
|---|---|
| Two sizes for broad and narrow repairs | Only fits 5.2 mm tip holes |
| Cheaper than a full plastic welder kit | No iron, rods or temperature control |
| Flat face gives more control than a pointed tip | Results depend on plastic type and technique |
Related plastic welding reviews
If you want a complete setup, compare the plastic welder kit review, the Atols plastic welder kit and the Jounjip plastic welding rods.
Frequently Asked Questions
Do these tips fit all soldering irons?
No. The listing gives a 5.2 mm shaft tip hole. Check the mount on your own soldering gun before ordering.
What comes in the package?
Two tips, 16 mm and 20 mm. The soldering iron gun and filler rods are not included.
Can I repair a car bumper with them?
They can help with light cracks in suitable plastic. Deep damage, missing material or structural parts may need a professional repair.
Which tip size should I use first?
Use 20 mm for wider seams and 16 mm for narrow cracks and finishing. Try both on scrap plastic.
Can a beginner use them?
Yes, with practice on scrap. Control the heat and pressure and let the plastic cool before you test the repair.
How do I clean the tips?
Wipe off melted plastic while the tip is warm, using a cloth or brass brush, and keep the tip free of residue.
The bottom line
These 2 pack plastic welding tips are a low-cost add-on for light plastic repairs, as long as they fit your iron. If you do not own a compatible tool or need rods and temperature control, buy a complete kit instead.
