Marbleized Polymer Clay Coasters

Decor, DIY, How-Tos

These marbleized polymer clay coasters are so fun and easy to make! Like so many of my other DIYs, such as the Glass Hurricane Lamps, the Wood Bead Cake Stand, the Mercury Glass Candle Holders, the Tiered Tray Jewelry Stand, and the Concrete Bowls these coasters are another wonderful handmade project. They are not only beautiful but functional too… My favorite kind of DIY!

Pinterest Pin for Marbleized Polymer Clay Coasters.

The best part about these coasters is that you can make them suit your style. The colors you choose to use for the marbling are up to you. If you like bold colors, go bold if you prefer pastels or neutrals, perfect. These coasters are beautiful in black and white too. Add some glam with metallic polymer clay. The sky is the limit! Most importantly, have fun, get creative, and make these DIY clay coasters your own. They will look beautiful and be perfect to use in your home, I promise.

What is Polymer Clay?

These beautiful DIY clay coasters are made with polymer clay. I first discovered this special kind of clay when I made my Clay Heart Trinket Dish. Polymer clay is an oven baked modeling clay composed of polymers, resins, and coloring agents. It’s widely used by artists and hobbyists for all different types of projects. One of the many reasons to love polymer clay is the vast amount of colors it comes in. The beauty of polymer clay is that it’s incredibly moldable, never dries out, and it hardens perfectly when baked at a low temperature in the oven. It can be found at most craft and art supply stores. I prefer the Sculpey brand.

Supplies Needed to Make Marbleized Polymer Clay Coasters

Polymer clay (in the colors of your choice, but use 2-3 colors)
Rolling pin
Circle cookie cutter (at least 4” in diameter)
Baking sheet
Parchment paper
Acrylic paint (I used gold)
Paintbrush

How to Make Marbleized Polymer Clay Coasters

Step 1: Roll and Shape the Clay

Roll the clay into long thin rods using two to three colors. Three colors are ideal. Each rod should be about 6-8 inches long. One rod should be about 1 inch thick, while the other color(s) should be about 1/2 inch thick. Gather up all the rods and gently begin to twist them together until the colors begin to blend. Roll the twisted rod on a flat surface creating one long rod.

Step 2: Create the Marbling

Fold the long rod in half and then twist the halves together. Roll into a rod again. Repeat this another couple of times until satisfied with the marbling. Be careful not to roll and twist the clay too many times, otherwise, the colors will get muddled together. I found that about four times gave me the marbling effect I liked best.

Step 3: Making the Coasters

With your hands, roll the clay into a ball and then use a rolling pin to flatten out the ball until it’s about 1/4-1/2 inch in thickness. Press the circular cookie cutter into the clay and place each circle on the parchment-lined baking sheet. Bake the coasters in the oven according to the clay package instructions. Allow the coasters to cool completely once they are out of the oven.

Finishing Touches

If there are rough edges on the coasters, use fine-grit sandpaper to smooth them out. Using a small paintbrush, paint the edges of the coasters to add a beautiful finishing touch. I used gold paint, but you can use copper, bronze, silver, or any color you like.

To Seal or Not to Seal

Polymer clay does not need to be sealed. Once baked, polymer clay is durable plastic and therefore even more durable than any sealer. If you want the coasters to have a glossy finish, you can seal them with a Mod Podge Dishwasher Safe Gloss formula coat. I did not seal my coasters and they are holding up beautifully.

What Else Can I Make With Polymer Clay?

Thank you for asking! The short answer is, “The sky’s the limit!” As you can see below, I have made trinket and jewelry dishes, candle dishes, and coasters all from polymer clay. Next, I want to make a ring dish. It’s been so fun creating beautiful and useful small gifts for myself, friends, and family with this special clay.

I hope you enjoy making these marbleized polymer clay coasters as much as I enjoyed making mine. They make beautiful and functional home decor and they are lovely additions to any home.