16. Mosaic Terrazzo Candle Coasters
Terrazzo candle coasters use cast stone composite embedded with contrasting crushed minerals, tumbled sea glass, or reclaimed marble fragments. Once ground flat and sealed, each coaster reveals an intricate stone mosaic pattern.
- Introduction & Concept: Terrazzo homeware brings architectural interest to functional tabletop accessories. The combination of colorful mineral aggregates set into a stone base makes these coasters popular for curated coffee tables and nightstands.
- Materials Needed: Casting stone composite (acrylic resin-mineral base), crushed colored glass, quartz aggregate or colored Jesmonite chips, round coaster silicone molds, 120-to-800 grit wet/dry sandpaper sheets, high-speed rotary sander (optional), and penetrating stone sealer.
- How to Make It:
- Prepare a batch of colored casting composite chips in assorted contrasting shades, let them cure completely, and break them into small chips.
- Mix fresh neutral-colored base composite liquid and powder thoroughly to a pourable consistency.
- Fold the colored aggregate chips into the wet base mixture, ensuring chips are evenly distributed throughout the batch.
- Pour the mixture into the round silicone coaster molds, tapping the sides to level the composite.
- Allow coasters to cure for two hours until completely hard and cool to the touch.
- Demold the coasters and submerge them in a shallow tray of water.
- Sand the top surface using coarse 120-grit wet sandpaper to grind through the thin top film and expose the sharp, colorful aggregate chips below.
- Progressively sand through 240, 400, and 800 grits to create a polished stone finish.
- Dry completely and apply two coats of food-safe, stain-resistant penetrating stone sealer.
- Tips & Market Variations:
- Always sand terrazzo wet; dry sanding fills the air with fine composite dust and creates deep surface scratches.
- Variations: Hexagonal coaster sets, large charcuterie board bases with handles, or contrasting black-and-white stone patterns.