The World's Most Popular Professional, Lightweight Body Filler Considered a standard in the collision repair industry, Dynatron Dynalite body filler features a combination of resins, talcs and microspheres that balance economy with high performance in auto body repair and finishing. This polyester resin-based material mixes quickly and easily with cream hardener for a lightweight filler that spreads easily, sands smooth and delivers excellent adhesion to the substrate. This filler is formulated to be as just easy to work with after curing, providing excellent featheredge that reduces sanding and finishing work. Finish sand time is as little as 20 minutes for added shop efficiency. The Science Behind the Standard Dynatron Dynalite is just one of a full range of Dynatron automotive refinish products, and has come to be regarded as a standard in collision repair for its light weight and ease of application. Dynatron is a brand of 3M – applying science to life, and helping auto body professionals create better results at a minimum of time and expense.