Bondo Putty Uses

Automotive Repair

• 3M offers a formula of Bondo designed to be a body filler for automotive applications. The body filler type of Bondo was designed as a replacement for traditional body soldering methods, which typically involved lead. Bondo body filler may be used to fill in dents, holes caused by rust and other damage. Once the Bondo is applied and dried, it can be sanded down and painted with automotive paint, leaving an unblemished surface.

Marine Repair

• 3M also manufactures a formula of Bondo designed specifically for marine purposes. Unlike other types of Bondo, which are made of polyester resins, marine Bondo is made to fill in fiberglass surfaces. There are glass-reinforced fillers, resin fillers and long strand glass hair fillers. Although the formula is a bit different for marine Bondo than the ones for general purpose or automotive Bondo, it can be applied using similar methods.

General Home Repair

• Although Bondo was originally created for use as an automotive body filler, it has since become a popular tool for making general home repairs. It is commonly used by carpenters to fill in damage, such as holes, cracks, splits and dents, on wood surfaces. However, Bondo is not limited to use on wood surfaces. It may also be used to fill in damage on metal, plastic, brick, tile, asphalt and masonry.

Hobby Applications

• All-purpose Bondo is commonly used by hobbyists, including computer and cosplay -- short for costume play -- enthusiasts. Bondo is often used in computer case modification because it will attach to metal and plastic and can be formed into any number of shapes before being sanded and painted. Cosplay enthusiasts often build weapons and accessories based on those used by their favorite characters. This costume equipment is typically made using papier-mache, then covered with a light coating of Bondo to give each piece weight and hardness for greater authenticity.