3M's Lightweight Body Filler is a two component polyester material which incorporates glass bubbles for lighter weight.
It cures tack-free in 20 minutes, and has good sanding and handling characteristics.
• Creamy texture, spreads smoothly
• Easy to sand; resists abrasive loading
• Vacuum processed to minimize pinholing
• Fill dents, gouges, and other cosmetic imperfections in steel, aluminium, SMC, and fiberglass panels
• 5 gallon container designed for use with an air-operated dispenser
• NOTE — Do NOT use other brands of hardeners with 3M™ body fillers and glazes — testing shows that a variety of failures can occur