Automotive Body Repair
Autobody soldering is the process of using a metal alloy (Sn-Zn-Cu) to fill, shape, and seal imperfections in a car's bodywork. Unlike plastic fillers (like Bondo), solder bonds directly to metal, offering superior strength, longevity, and resistance to cracking.
Properties of KappAutoBody Filler:
- High corrosion resistance: Zinc and copper enhance protection against rust, which is beneficial for automotive environments.
- Moderate melting point: Typically around 200–250°C (392–482°F), suitable for bodywork but requires careful heat control.
- Good mechanical strength: The copper content improves joint strength and durability.
- Lead-free: Environmentally friendly and compliant with modern regulations
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KappAutoBody 1 lb Kit$44.50Lead-free Cadmium-free Auto Body buildup and repair solder. 390-570°F / 200-300°C slushy range allows buildup and application in all orientations. - 1lb solder rods, Stainless Steel brush, and instructions. VIEW PRODUCT -
KappAutoBody 5 lb Kit$179.50Lead-free Cadmium-free Auto Body buildup and repair solder. 390-570°F / 200-300°C slushy range allows buildup and application in all orientations. - 5 lbs solder rods, Stainless Steel brush, and instructions. VIEW PRODUCT
Why Use Solder Instead of Filler?
- Durability: Solder doesn't shrink or crack over time.
- Workability: It can be filed and shaped precisely.
- Corrosion Resistance: Properly applied solder resists rust better than fillers.
- Authenticity: Preferred in classic car restorations for period-correct repairs.
Standard uses:
- Seam sealing after welding panels.
- Rust repair where a corrosion-resistant bond is needed.
- Electrical grounding points on the body.
- Galvanized steel repairs, where zinc content helps match surface chemistry.
Contact Us
Reach out to Kapp Alloy today for product recommendations, data sheets, and expert consultation tailored to your project.