Sanding down wooden countertops before treating them with oil is a common practice to achieve a smooth and even surface. Here's a general process for sanding wooden countertops:
Gather the necessary materials: You will need safety goggles, a dust mask or respirator, sandpaper (in various grits), a sanding block or electric sander, a vacuum or shop vac, and clean cloths.
Prepare the work area: Clear the countertop of any items, and cover surrounding surfaces to protect them from dust and debris.
Start with coarse sandpaper: Begin sanding with a coarse-grit sandpaper (around 80 or 100 grit) to remove any existing finish, stains, or imperfections. Sand in the direction of the grain, applying even pressure. You can use a sanding block for manual sanding or an electric sander for larger surfaces.
Progress to finer grits: Once you have achieved a consistent and even surface with the coarse grit, gradually move to finer grits of sandpaper (such as 150, 180, and 220 grit). Each new grit will help refine the surface and remove any scratches left by the previous grit. Continue sanding in the direction of the grain.
Remove dust: Use a vacuum or shop vac to thoroughly clean the countertop, removing all the dust generated during sanding. Ensure the surface is completely dust-free before proceeding.
Wipe down the countertop: Use a clean cloth slightly dampened with water or a mild cleaning solution to wipe down the countertop. This will remove any remaining dust particles and prepare the surface for oil application.
Apply the oil: Follow the manufacturer's instructions for the specific oil you are using. Apply a liberal amount of oil to the countertop using a clean cloth or a brush, ensuring even coverage. Allow the oil to penetrate and soak into the wood for the recommended time.
Remove excess oil: After the recommended soaking time, use a clean cloth to wipe off any excess oil on the surface. This step is important to avoid an overly greasy or sticky finish.
Allow the oil to cure: Let the oil cure according to the manufacturer's instructions. This typically involves allowing the countertop to dry for a certain period, usually overnight or for a specified number of hours.
Repeat the oiling process (optional): Depending on the type of oil and the desired finish, you may need to repeat the oiling process to achieve the desired level of protection and sheen. Follow the manufacturer's recommendations for multiple coats, if applicable.
Remember to always follow safety guidelines, wear appropriate protective gear, and work in a well-ventilated area when sanding and using oil or any chemical products.