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Patent Knotting is a low viscosity shellac based product. Use on knotted or resinous areas of wood to prevent staining of future paints films. This is available in 500ml and 2.5 Litre tins.
Skip to content Patent Knotting is a low viscosity shellac based product. Use on knotted or resinous areas of wood to prevent staining of future paints films. This is available in 500ml and 2.5 Litre tins.