How to Fix Sandstone Coasters
- 1). Scrape off the original cork from the underside of the broken coaster. Point the blade away from you and your other hand to prevent accidental cuts.
- 2). Dissolve any residual adhesive from the bottom of the broken coaster by saturating it with an adhesive removal product, then rubbing it off with a rag.
- 3). Dry-fit the broken pieces together and measure the diameter of the coaster.
- 4). Lay out a sheet of 1/4-inch-thick cork. Open a pencil compass to create a diameter that is 1/8 to 1/4 inch smaller than the diameter of the coaster. Draw a circle on the cork sheet.
- 5). Cut out the cork circle with a craft knife, utility knife or circle cutter.
- 6). Depress the plunger on a two-part epoxy system to extrude a small amount of resin and a small amount of hardener. Mix the two parts together using the small, plastic spatula that comes with the epoxy system.
- 7). Pick up the largest piece of the broken coaster. Apply a thin layer of epoxy to the bottom side using the plastic spatula.
- 8). Set the piece, glue-side down, in the correct orientation on the cork circle so the outer edge hangs 1/8 to 1/4 inch over the edge of the cork. Gently press it down.
- 9). Continue to adhere the remaining pieces in the same manner, fitting them together to reform the whole coaster.
- 10
Weigh down the coaster with a can of soup and let the epoxy cure for the time indicated in the directions. - 11
Squeeze out and mix another small amount of epoxy. Mix clean, light-colored sand into the epoxy to match the color and grain of the sandstone. Fill any remaining gaps where the break lines are with the epoxy using a toothpick. Let the epoxy dry for the required time.
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