Create a beautiful set of 4 custom resin coasters embedded with dried flowers. This beginner-friendly project takes about 2-3 hours of active work plus 24-48 hours curing time. Perfect for personalizing your home or making thoughtful handmade gifts.
Cover your work surface with a plastic sheet or wax paper. Set up in a well-ventilated area away from dust. Gather all materials and have paper towels handy. Make sure the room temperature is between 70-75°F for best results.
Plan your design by laying out dried flowers on a flat surface next to your molds. Experiment with different arrangements until you're happy with each coaster's look. Keep flowers relatively flat and small enough to fit within the coaster boundaries.
Put on nitrile gloves and safety glasses. In a plastic mixing cup, pour equal parts resin and hardener according to package directions (typically 2 oz resin + 2 oz hardener for 4 coasters). Use the wooden stir stick to mix slowly for 3-5 minutes, scraping sides and bottom. Mix thoroughly but avoid creating bubbles.
Slowly pour a thin base layer of resin into each silicone mold, filling about 1/4 inch deep. Use the stir stick to guide resin into corners. This creates a clear foundation for your flowers to rest on.
Use a heat gun or torch to gently pass over the surface of each coaster from 6-8 inches away. Move quickly in sweeping motions. This will pop any surface bubbles. Be careful not to overheat or you'll create new bubbles.
Allow the base layer to sit undisturbed for 3-4 hours until it reaches a thick, honey-like consistency. It should be tacky but not liquid. This prevents flowers from sinking to the bottom.
Using tweezers, carefully place your dried flowers face-down onto the tacky resin base. Press gently to ensure they make contact with the resin. Arrange petals, leaves, and stems exactly as you want them to appear in the final coaster.
Wearing fresh gloves, mix another batch of resin and hardener in a clean mixing cup using the same ratio as before. Stir slowly and thoroughly for 3-5 minutes. This will be your top coat that encases the flowers.
Slowly pour the second batch of resin over the flowers, filling the molds to the top edge. The resin will encapsulate the flowers completely. Pour from low height to minimize bubbles. Use a stir stick to guide resin into any gaps around flowers.
Again use your heat gun or torch to pass over each coaster's surface to pop bubbles. Pay special attention to areas around flowers where bubbles tend to get trapped. Work quickly and keep the heat source moving.
Cover coasters loosely with a cardboard box or plastic dome to protect from dust while allowing air circulation. Let cure undisturbed for 24-48 hours at room temperature. Don't move or touch them during this time.
Once fully hardened, gently flex the silicone molds to release each coaster. They should pop out easily. If there's resistance, wait another 12 hours. The resin should be completely hard and not tacky at all.
If there are any sharp edges or drips on the coasters, use fine-grit sandpaper (220-grit or higher) to smooth them out. Sand lightly in circular motions. Wipe away dust with a damp cloth.
Peel the adhesive backing from cork sheets and carefully press one onto the bottom of each coaster. This prevents scratching furniture and provides grip. Trim any excess cork with scissors so it's flush with the coaster edge.
Wipe down each coaster with a microfiber cloth to remove fingerprints. Let them sit for an additional 24 hours before regular use to ensure complete hardening. Your resin coasters are now ready to use or gift!