If you have seen our previous crafts, you know we love resin! We use it with mosaic projects like our Steampunk Mosaic Coasters. The clear resin lets the design shine through. Well, here’s another resin project inspired by a trip to the beach. We made Seashell Coasters! If you’ve never used resin, no worries. We’ve included a video showing how to mix and pour the resin. It’s not hard. You just follow the directions. We’ll show you how!
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How To Make Seashell Coasters With Resin
Materials (for each coaster)
1 jar lid, 3¼” to 3½” diameter
Large shell (not too tall)
4 self-adhesive felt pads (optional: to put on the bottom)
Spray paint, silver
Clear silicone adhesive
Envirotex Lite Pour-On Finish (resin and hardener kit)*
4 straight-sided cups
2 paint stirring sticks
Timer (You can use your cell phone.)
* The linked kit is only 8 ounces. That is enough resin for two or three coasters.
Steps To Make The Seashell Coasters
1. Wash and dry your jar lids, then spray paint them silver. Stick the felt pads to the bottoms of the lids.
We used the lids to Pirouette cookies, which are delicious. But that’s not why we chose them. They are unthreaded which we think looks nice. You can also use salsa jar lids.
2. For each coaster, glue a large shell into the lid. Make sure the shell does not stick up higher than the edge of the jar lid. We used a ruler and swiped the edge across the top of the lid to make sure it didn’t touch the shell. Drizzle the shell chips in to surround the shell and cover the bottom of the lid. Add smaller shells around the center one. We added a few pearls too.
3. Now you are ready to mix the resin. Put on gloves and protective eyewear and get your supplies ready.
Here’s a video we made showing how to mix the two-part resin.
Pour the resin in one cup and pour the hardener in second cup making sure the two cups have the same amount. Our coasters used 2-3 ounces of mixed resin each. We mixed the resin in two batches (more manageable!). To make the first batch, we measured 3 ounces of the resin in one cup and 3 ounces of hardener in another cup. This amount will cover two of the seashell coasters.
Once you have carefully measured out the resin and the hardener, pour the entire contents of each cup into the third cup. Start the timer – you will stir for two minutes. Mix the resin with a paint stirring stick, scraping the bottom of the cup and scraping the resin off the stirring stick and back into the mix while mixing. After two minutes, pour the mixed resin into a fourth clean cup. Mix again for one minute using a new clean paint stirring stick.
5. Pour the resin into the seashell coasters. We like to drizzle it all over so we make sure it gets in every nook and cranny. Pour to the top lip of the lid. Make sure the coasters are on a level surface. W like to cover them to prevent dust from settling on them while they are curing.
6. Five to fifteen minutes after pouring the resin, little bubbles will appear in the coasters. These are expected and are a part of the process. Exhale gently over the surface of the coaster to release the bubbles. (The carbon dioxide in your exhaled breath releases the bubbles.) You can pop the big bubbles with a toothpick. Look for trapped bubbles near the shells too and pop them.
Let the coasters cure on a level surface in a dust-free area for 48 hours.
We made a version with sand to see how it would look, and although it is pretty, we think the shell chips look much more glamorous! But if you want to make them with sand, here’s a picture of what that looks like.
Here is one made with shell chips.
We think these turned out so pretty! And what a lovely way to remember summer. If you have any questions or comments while you’re working on your coasters, you can post a comment and we’ll respond. We’re here to help!
Jennifer & Kitty
We love getting pinned!
If you like seashell crafts, we have plenty! Here are some of our favorites.