Deep scratches or tool marks on a finished carving can be frustrating, but with the right techniques, they can be effectively removed. Here are the most reliable methods to restore your carving to its original beauty:

1. Sanding with Gradual Grits: Start with coarse-grit sandpaper (e.g., 120 grit) to level the scratch, then progress to finer grits (up to 400 or 600) for a smooth finish. Always sand along the grain to avoid further damage.

2. Using a Wood Filler: For deeper scratches, apply a matching wood filler. Once dry, sand it flush with the surrounding area and refinish the surface.

3. Steam Treatment: Lightly dampen a cloth and place it over the scratch, then apply a hot iron. The steam can swell the wood fibers, reducing the scratch's visibility.

4. Burnishing with a Smooth Tool: Rubbing a polished bone or metal tool over the scratch can compress the fibers and blend the mark into the surrounding wood.

5. Reapplying Finish: After repair, reapply the original finish (oil, wax, or varnish) to unify the appearance and protect the repaired area.

By following these steps, you can effectively eliminate imperfections and preserve the craftsmanship of your carving. Always test methods on a small, inconspicuous area first to ensure compatibility with your wood type and finish.