Drill the hole: Start by drilling a hole at the center of your marble tile. Use painter’s tape across the surface of the tile for extra strength, which will help prevent chipping or breaking the marble during drilling.
Create a groove: Begin with a regular drill bit to make a small groove at the center. Drill just enough until you see ceramic dust. Then, switch to a 5/16 ceramic drill bit for the main hole. Make sure to spritz water on the area while drilling to keep the marble cool and avoid excessive friction. he drilling process may create some mess, so use a paper towel to dab away any excess water and dust. Once the hole is drilled, remove the painter’s tape and wipe the surface clean.
Secure the mechanism: Next, test the clock mechanism by inserting the battery part through the hole to check for a proper fit. If the clock mechanism doesn’t fit snugly, apply a thin layer of super glue around the back of the battery mechanism, avoiding the hand shaft to ensure it can still rotate freely. This is necessary because the marble is too thick for the hex nut to clip onto from the front side, so it needs to be held in place on its own. Insert the mechanism through the hole, holding it in place until the glue fully sets.
Add the washer and hex nut: After the mechanism is secured, slide the washer over the shaft, followed by the hex nut. You can glue the washer and hex nut in place to ensure they stay securely fastened.
Attach the clock hands: Follow the instructions provided with your clock kit to attach the clock hands to the mechanism. Make sure everything is properly aligned.