Bondo® Liquid Hardener mixes with Fiberglass Resin and Bondo® Metal Reinforced Filler to create high-quality, long-lasting repairs. When hardener is mixed with product, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair.

Liquid Hardener mixes with Fiberglass Resin and Bondo® Metal Reinforced Filler to create high-quality, long-lasting repairs. When hardener is mixed with product, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair. Our hardener is also easy to mix.

• Liquid hardener designed to mix with Bondo® polyester fiberglass resin and Bondo® Metal Reinforced Filler requiring liquid hardener
• Creates chemical reaction with resin for fast curing
• Use with Bondo Fiberglass Resin for auto and home repairs including tubs, showers, sinks, pools, hot tubs, boats, and more.
• Results in a 100% waterproof repair
• Apply to fiberglass, metal, brick, wood, and concrete surfaces
• Once mixed, the fiberglass resin will cure in approximately 2 hours
• Great for interior and exterior projects
• Tube helps make application easy

• Color: Transparent
• Part Number: 912