Designed to work with all fillers, putties and glazes

Use with 3M Many Lines of Car Body Filler
Bondo® All-Purpose Blue Cream Hardener is a hardening agent designed to work with all fillers, putties and glazes. The creamy consistency mixes easily and quickly. 3M hardener combines the best of ease of use and quality final results.

View more Bondo® products (PDF, 812.1 Kb)

Formulated for Convenience
When mixed with a 2-part filler, a chemical reaction occurs which allows you to make high-quality, long-lasting repairs to metal, masonry, concrete, painted wood, bare wood, drywall and more. The resulting repair can be sanded in 15 minutes and painted in only 45 minutes. The product once mixed with the filler/glaze dries to the natural color of the filler/glaze which can be easily covered with most primer and paint.

Formulated in Controlled Conditions
3M cream hardener is formulated and packaged under temperature-controlled conditions to ensure freshness and maximum performance. Mixing auto body filler and cream hardener is an easy task. To reduce the chance of creating pinholes, avoid mixing in a circular pattern, which can force air into the mix. Mixing should be done in a back and forth wiping or folding motion.

Use During the Fill Stage of the 3M™ Body Repair System
Even a small repair can seem complex at first. So 3M's Body Repair System simplifies the entire automotive body repair process by dividing it into four stages:

Stage 1 — Prepare. This stage includes pulling dents, removal of paint and rust and efficient, effective masking of the area.

Stage 2 — Fill. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting.

Stage 3 — Paint. This stage includes painting the area and blending and smoothing primer and paint.

Stage 4 — Finish. The final stage for showroom-grade results: removing small defects, sealing and polishing clear coats and other painted surfaces.

3M supplies premium products such as abrasives, tapes, body fillers (PDF, 504.4 Kb) and tools (PDF, 18.52 Mb) for every stage. This system helps you work easily, efficiently and successfully across the entire body repair process.