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A high quality patching filler designed for trade use, Septone’s Fibre Tough Glass Fibre Filler can provide extra strength to bridge rust holes and other large holes, where body filler would likely sag dramatically. Glass Fibre filler is a dependable product, able to patch across holes of up to 50mm in diameter without welding. Glass Fibre Filler is also engineered to adhere brilliantly to raw metal surfaces, waterproof once cured, ensuring perfect rust repairs. Glass Fibre Repair presents minimal shrinkage and is designed to set quickly. This product is ideal for use on metal panels anywhere, from caravans to trailers, guttering and automotive bodies, however this product may need to be finished with a product such as Septone Car Filler to ensure a smooth, easy to sand finish.