โขLong strands of chopped fiberglass deliver twice the strength of regular body filler
โขFill holes up to 1โ wide and rebuild missing pieces without backing strips, cloth or mat
โขVersatile filler works with fiberglass, metal and wood
โขFast dry formula allows for sanding in only 20 minutes
โขCompatible with most paints and paint systems
โขFiller comes with Bondoยฎ Red Cream Hardener
โขUse during the Fill stage of the 3Mโข Body Repair System
Our Bondo-Hairยฎ Long Strand Fiberglass Reinforced Filler features strands of chopped fiberglass up to 1โ long for extra strength on your toughest repairs: filling large rust holes, restoring shattered fiberglass and more. In fact, this waterproof filler delivers twice the strength of standard body filler, making it ideal for rebuilding missing pieces during full vehicle restoration.
Two Times as Strong for the Toughest Repairs
Formulated to be twice as strong as regular body filler, Bondo-Hairยฎ Long Strand Fiberglass Reinforced Filler is suitable for your most challenging projects โ rebuilding missing pieces, vehicle restoration, shattered fiberglass repair, filling metal rust holes up to 1โ in diameter and more. This filler features durable strands of chopped fiberglass up to 1″ long, eliminating the need for backing strips, mats or cloth. For repairs where even more strength is needed, these added materials can be easily used. The versatile filler is suitable for repairs on fiberglass, metal and wood.
Easy from Mixing to Sanding
Bondo-Hairยฎ Long Strand Fiberglass Reinforced Filler is also very fast and easy to use. The filler comes with Bondoยฎ Red Cream Hardenerfor fast, easy mixing. Its fast curing properties allow for sanding in as little as 20 minutes, keeping auto restoration projects on schedule. The cured filler is compatible with most fillers, primers and paints.
Use During the Fill Stage of the 3Mโข 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 โ Prepare. This stage includes pulling dents, removal of paint and rust and efficient, effective masking of the area.
Stage 2 โ Fill. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting.
Stage 3 โ Paint. This stage includes painting the area and blending and smoothing primer and paint.
Stage 4 โ Finish. The final stage for showroom-grade results: removing small defects, sealing and polishing clear coats and other painted surfaces.




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