Preparing slate coasters for engraving involves a few essential steps to ensure a clean and professional finish. First, start by thoroughly cleaning the slate surface. Use a mild detergent mixed with water to wipe down the coasters, removing any dirt, dust, or oils. Rinse them with clean water and dry them completely with a soft cloth to prevent any moisture from interfering with the engraving process.

Next, check the slate for any imperfections or rough edges. If you find any, use fine-grit sandpaper to smooth out the surfaces gently. This not only improves the aesthetic but also helps the engraving tool glide smoothly during the process.

After sanding, it’s crucial to degrease the coasters. Use a lint-free cloth and a solution of isopropyl alcohol to remove any oils from your hands or the environment. This prepares the slate for optimal adhesion of the engraving and reduces the risk of chipping.

Lastly, consider applying a thin coat of painter’s tape over the area to be engraved. This helps guide your design and protects the surrounding slate from accidental damage during engraving, ensuring a clean and precise outcome.