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The 3M 7100314410 is a polyester-based body filler designed for filling dents, scrapes, chips, cracks, and rust holes on automotive, home, and hobby surfaces. Sold in a 1-pint (14 oz) container with red cream hardener included, this filler is formulated to be non-shrinking and permanently durable once cured. It mixes at straightforward ratios, spreads smoothly over damaged areas, and reaches a sandable state in approximately 20 minutes. Automotive body technicians, restoration specialists, and skilled DIYers use it to complete body repairs and surface prep in a single work session.
This filler is suited for automotive body repair on passenger vehicles, light trucks, and similar platforms, as well as select home and hobby applications requiring a hard, stable fill. It bonds to bare metal, previously painted surfaces, and fiberglass substrates where surface preparation has been completed. Because it is compatible with all paint systems, it fits into standard refinishing workflows without requiring specialty topcoat products. Red cream hardener is included in the package, so no separate hardener purchase is needed to begin work.
Designed as an OEM-style body repair filler compatible with all paint systems for use on automotive, home, and hobby repair and restoration projects.
Surface preparation is critical — remove loose paint, rust scale, and contaminants and abrade the repair area before applying filler. Mix only the amount of filler that can be spread within the working time after hardener is added, as pot life is limited once mixing begins. Wear appropriate personal protective equipment including gloves and eye protection when handling uncured filler and hardener. Sand the cured filler to shape before applying primer and topcoat per the paint system manufacturer's instructions.
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