Yes, you can oil wooden window frames. Over time, exposure to sunlight, moisture, and dry conditions can cause wooden window sills to lose moisture, become dull, rough, and damaged. To restore their beauty and protect them, you can use a solution of boiled linseed oil and paint thinner that will rejuvenate the sills.

Here are the steps to oil your wooden window frames:

Step 1: First, clean the window sill thoroughly to remove any accumulated dust, dirt, and grease. You can use a soft cloth and warm, slightly soapy water for this. Fold the cloth several times to prevent any splinters in the wood from poking through the fabric into your fingers. After cleaning, rinse the sill with clean water and let it dry.

Step 2: Check the surface for any nails that protrude above the surface of the sill. Use a nail set and hammer to countersink the nail heads back into the wood. If any of the protruding nail heads are rusted, use a pair of pliers to pull those nails out of the sill. Replace them with countersunk, galvanized nails.

Step 3: Next, use a paint scraper and putty knife to remove any loose paint on the surface of the window sill.

Step 4: Once you have removed all loose paint, use sandpaper to smooth the surface of the window sill. This will also remove any remaining roughness and wood splinters.

Step 5: Now, we vacuum the window sill to remove any paint specks and sawdust.

Step 6: Next, we mix equal parts boiled linseed oil and paint thinner in a metal bucket or can.

Step 7: We paint a thin coat of the boiled linseed oil and paint thinner mixture over all the wood surfaces of the window sill. Then, we allow it to dry for 24 hours. To prevent the boiled linseed oil and paint thinner solution from drying out, we cover the bucket tightly and store it away from any heat source or flame.

Step 8: After 24 hours, we check the window sill. If it is no longer tacky to the touch, we add another coat of the boiled linseed and paint thinner solution. Then, we let the window sill dry for another 24 hours.

Step 9: We repeat Step 8 and add another coat of the boiled linseed and paint thinner solution after those 24 hours have passed. By the end of this step, the window sill should be restored. However, we let it dry for another 24-hour period.

After completing the above steps, you can proceed to apply several layers of boiled linseed oil and paint thinner solution to the surface of the window sill. Be sure to follow the instructions on the product label and allow sufficient drying time between each coat. With proper care, your wooden window frames will regain their shine and beauty, protecting them from damage and extending their life.

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