## Common ground
All options are types of devices used to apply adhesive (silicone or glue), typically in manual or semi-manual operations.
## Options at a glance
**8205.59 – Non-electric glue guns**
- **Defining trait:** Powered by manual force (e.g., plunger, lever) rather than electricity.
- **Typical examples:** Hand-pump adhesive dispensers, syringe-style glue applicators.
- **Best fit when:** No power source available; low-cost, simple use in DIY or craft settings.
**8419.89 – Electrical workshop-type glue guns**
- **Defining trait:** Electric, designed for heavy-duty industrial or workshop use with high output and durability.
- **Typical examples:** Industrial hot-melt glue guns used in manufacturing or assembly lines.
- **Best fit when:** High-volume, continuous use in professional or industrial environments.
**8424.20 – Spray glue guns**
- **Defining trait:** Uses compressed air to spray adhesive in a fine mist.
- **Typical examples:** Air-powered spray glue applicators for large surface bonding (e.g., upholstery, signage).
- **Best fit when:** Needing even, wide coverage or working with large, flat surfaces.
**8467.29 – Handheld self-propelled industrial glue gun**
- **Defining trait:** Self-propelled via motorized mechanism; often used in automated or semi-automated processes.
- **Typical examples:** Robotic or motor-driven glue dispensers for precision assembly.
- **Best fit when:** Automated or high-precision industrial bonding with minimal manual input.
**8516.79 – Electric household glue guns**
- **Defining trait:** Electric, designed for light-duty home use (e.g., crafts, repairs).
- **Typical examples:** Common desktop glue guns used by hobbyists and families.
- **Best fit when:** Occasional, low-intensity tasks at home or in small workshops.
## Key differences
| Option | Power Source | Primary Use Case | Mechanism | Typical Environment |
|-------|---------------|------------------|-----------|----------------------|
| 8205.59 | Manual | DIY/crafts | Lever/syringe | Low-tech, no power |
| 8419.89 | Electric | Industrial workshop | Heat + electric motor | High-volume production |
| 8424.20 | Air-powered | Large surface bonding | Spray nozzle | Workshop with air supply |
| 8467.29 | Motorized self-propelled | Automated precision | Self-moving mechanism | Factory automation |
| 8516.79 | Electric | Home use | Heat-based dispensing | Domestic, light-duty |
## How to choose
- Is it powered by electricity? → 8419.89 or 8516.79
- Is it used for large, even coverage? → 8424.20
- Does it move on its own? → 8467.29
- Is it manual (no power)? → 8205.59
- Is it for home crafts or light repairs? → 8516.79
## Overlaps & pitfalls
- **Overlap:** Electric models (8419.89 and 8516.79) both use electricity, but differ in scale and purpose. The main distinction is industrial vs. household use.
- **Pitfall:** "Electric" alone doesn’t distinguish workshop from home use—context matters. If unsure, prioritize the **main function**: industrial production → 8419.89; home use → 8516.79.
- **Unclear term:** “Handheld self-propelled” (8467.29) may be misinterpreted as just a motorized gun—clarify if it’s fully automated or semi-autonomous