Shellac Flakes by Viking Sales Save Liquid error (product-badge line 32): -Infinity% $3.75 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Price: $3.75 per ounce Shellac flakes are the base for the coating of your rabbits in your window sash. It is important to trap the raw linseed oil in the linseed oil glazing between the shellac and the organic linseed oil paint on the outside of the glazing. This is why old linseed oil glazing last for 50 years. Mix the shellac flakes with just a few drops of denatured alcohol. The mixture should be of the consistency of syrup. With thick shellac you will only need one coat. Shellac is an excellent barrier. Drying time is one hour. Shellac is also used for knots to prevent the sap from going through any paint.