Boiled cold pressed refined linseed oil
Impregnation oil
As linseed oil molecules are very small, it can penetrate the surface and protect it from penetration by water, moisture and dirt. Linseed oil normally dries in 1-3 days depending on the surface and how thick the applied coat is. Air, heat and light speed up the drying process. Add thin layers and remove the excess with a cloth after 20 minutes. It is good to add several coats, allowing the surface to dry between each coat, until the surface is completely saturated.
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