Resin is a versatile material that is often used on tabletops. Although it’s durable and difficult to damage, it is possible to scratch it if you aren't careful. This can ruin the entire aesthetic of your table. While smaller scratches can simply be sanded down, repairing larger and deeper scratches is a delicate affair, often requiring filling. Epoxy resin is often used to fill in scratches and cracks because it's simple to apply and dries clear.
Cleaning the Surface
Before you fill the gap with resin, you must thoroughly clean it. Without proper cleaning you could be left with dust inside the scratch, which will prevent the resin from binding. This will only result in having to repeat the application process in the future. Dampen a rag in soap and warm water and wipe the surface of the crack. Use a dry rag to remove any dampness on the table surface before continuing.
Marring is more common than large scratching and often goes unnoticed. Marring can occur for various reasons, such as sliding an object across the table. Cleaning the surface will usually solve the problem. If cleaning doesn't suffice, wipe the tabletop with a light duty scouring pad that's been dampened in a cleaning solution. Apply the least amount of pressure you need to remove the marring. Too much pressure could damage the tabletop.
Large scratches are an eyesore and should be dealt with immediately to prevent further damage to the table surface. Use a craft stick to apply a layer of two-part epoxy over the scratch. Fill it in as much as possible. Use a dull razor blade to scrape off the excess and make it flush with the rest of the table. Wait for the resin to cure, and then sand the affected area with 200-grit sandpaper. Apply a thin layer of epoxy finish over the top with a brush or roller.
Maintenance and Care
Making sure your resin table is cleaned regularly will help prevent scratches from occurring in the first place. Apply an occasional layer of finish oil to the surface to keep it in good condition. Pour a small amount of oil onto a clean, dry rag. Buff the surface of the table, rubbing in a circular motion.