How to make a bottle cap resin coaster

How to make a bottle cap resin coasterA bottle cap resin coaster set is the perfect man cave gift.  Get a few bottle caps off your guy’s favorite adult beverage, add some resin and you have an easy DIY gift for dads!

resin craft supplies

Supplies needed:

Step 1: Prep the mold

resin mold release

Apply a light mist of the mold release to your coaster mold and allow to dry (this takes about 20 to 30 minutes).

Step 2: Measure and mix resin

resin measuring cups

Measure the amount of resin needed for your coaster.  (I mixed a total of 1 1/2 ounces for the first pour.)

If you have never mixed this before, this article explains how to mix resin and hardener in five easy steps.

Step 3:  Pour the first layer of resin

pouring resin into a mold

Gently pour your resin into the mold in a thin stream.  This will help you avoid making bubbles into your resin.

Step 4:  Add bottle caps

bottle caps in resin

Once your mold is half full (or a little more), gently place your bottle caps into the resin.

Hint:  You want to put the resin in first because placing the bottle caps first, then pouring the resin, may cause you to trap air bubbles underneath the bottle caps.

position bottle caps

Use your stir stix to gently push the bottle caps into the desired placement.  Add in any remaining resin and scoop resin into the bottle caps if necessary.

Step 5:  Remove bubbles

removing bubbles from resin

Using a drinking straw, blow lightly over the top of the resin to remove any bubbles.

Be careful not to inhale the resin!

Cover with a dome and allow to cure.

Step 6:  Mix the second layer of resin

adding color to resin

After your first layer has (at least partially) cured, mix another 3/4 to 1 ounce of resin.  Add the color to this mixed resin.

Hint:  Add one drop at a time, then mix in thoroughly.  You only want to add as much as you need to in order to get your desired color.

Step 7:  Pour the resin into the mold

colored epoxy resin

Pour the layer of colored resin over top of the layer of clear resin and bottle caps.

spread epoxy resin

Use the stir stix to evenly spread the resin over the top of the bottle caps.

Cover and allow to fully cure.

Step 8:  Demold the bottle cap resin coaster

demold resin coaster

Once the resin has cured (approximately 24 hours), flip the coaster mold over.  Gently push from the back while twisting the mold.  Your casting should pop out.

Step 9:  Sand edges


sanding resin coaster

Sand the rough edges off your resin coaster with a 600 grit wet/dry sandpaper.  Wet the sandpaper first.

Hint:  If you’re worried the coaster may scratch a delicate surface, glue cork and/or felt pieces to the bottom to elevate the edges of the coaster.

bottle cap resin coaster tutorial

Enjoy your new bottle cap resin coaster!

Ready to get started with resin but confused by all the information out there?

Like you can spend all day reading articles and watching videos only to wonder where the time went and still feel confused.  Put that behind you!  I wrote the ebook Resin Fundamentals with the resin beginner in mind.  I share everything I’ve learned in my fourteen years of creating with resin into an easy-to-understand path beginners need to follow to create something amazing with resin.  Buy the book down and download it in minutes!

Unpublished Blog Posts of Resin Obsession, LLC © 2021 Resin Obsession, LLC

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44 thoughts on “How to make a bottle cap resin coaster

  1. I wish I had seen this when my husband was alive. No one else in my family drinks beer. I can think of other ways to decorate a coaster, though!

  2. I’ve been making these, but haven’t used any, but wondered the same thing, if the glass or bottle would slide off. I guess I should try it. Also, I’ve made some with Silhouette Cameo paper lace doily cut outs, they are pretty. Also made one with my grandson’s picture in it and wrote Happy Father’s Day down the sides.

  3. If I am not doing the color step and am leaving the coaster clear, can I poor in all the resin in at once? Or should I still do layers to keep the bottle caps from floating to the top and sticking out?

    Also do I need to remove the plastic disk in the bottle cap first? Thanks so much.

  4. @Shaina,

    You can pour the resin in all at once. Make sure to put some resin in the caps as that will weight them down. You don’t need to remove the liners if you don’t want to. They won’t react with the resin.

  5. Another thing you might be interested in doing for this project is to put felt or cork on the bottom. I purchased cork squares that had adhesive on the back. So all you have to do is cut a circle and put the cork circle on the back, if you are concerned about scratches to your furniture or coaster bottom. To get a more uniform circle when you cut, you can select a drinking glass (top or bottom) that is slightly smaller than your coaster, trace it and cut.

  6. I followed the steps up above to a tee and have had a lot of problems getting the coasters out of the molds. What am I doing wrong?

  7. I used super glaze ultra gloss. I even let it sit for three days and it still wouldn’t come out of the molds. Maybe I should try a different kind of resin?

  8. @Nikki, I haven’t used that product, but it looks like it’s meant for a glossy coating, but not molds. It’s probably not going to come out. 🙁

  9. I purchased all the recommended products from this tutorial for mailing resin coasters and have followed all the directions to the “T” but for some reason I am still getting tons of bubbles. I am also letting the first half cute for over 12 hours and the second layer which is tinted is still mixing with the first layer?? Also when the coaster has finally cured and released from the mold the top part of the coaster is not glossy, but instead it is a matte finish with a texture, I presume from the mold. How do I correct this. Can you please provide and advice or helpful hints. Not to please right now. Thanks

  10. @Nick, I’m sorry to hear things aren’t going well for you. I’m going to email you a few links to help you out.

  11. I want to glue felt to the bottom of my coaster, however my coaster is clear and I don’t want the glue to show through. What kind of glue would you recommend that will ensure maximum stick and minimal show? 🙂

  12. Ours r super sticky after 6 days. Do u think we didn’t mix it right?? Maybe I will order straight off your site and get the rest u offer…!! These. So oll and I drink fun ky beers with oil caps!

  13. @Annie, 75% of the time when the resin doesn’t cure properly, it is either due to inaccurate measuring or improper mixing. I would suggest trying again using measuring cups and scraping the sides of the cups while stirring.

  14. What kind of dome should I use? I was just going to use a box or should it be plastic. What is the purpose for the dome? I and not using dye and will just being pouring all the resin in at once.

    1. A dome is meant to keep dust, hair and other particles out of your resin while it’s curing.

  15. I followed the directions above except I did not use any color. After over 24 hours I popped the coaster out of the mold, and I noticed a few areas where the resin was still sticky. I gave it a few more days and it hasn’t hardened in those spots. Is this a common occurrence, if so, how can it be avoided? and once it’s happened, is there any way to fix it?

    1. The most likely explanation is you did not mix your resin well enough. You need to mix it for a couple of minutes, scraping the sides of your cup and mixing utensil several times during the mixing process. To fix your sticky castings, you can go over it with another layer of resin.

  16. We made resin coaster. 7 days ago. I noticed that when k placed a mug on one for the first time the writing on the bottom transferred to the coaster. And left kind of a scratch ring.
    This mean it just didn’t cure
    properly or I mixed it wrong all together?


  17. Hi,
    To remove the bubbles before pouring the color resin on, can I just use a torch over it instead of blowing with a straw?
    Thank you

  18. How do you finish off a coaster mould to a smooth finish on the bottom as there is a sharp ring around the sides when cured and popped? Have tried sanding but then lose the brilliant shine of the resin?

    Thank you for all your help in advance.

  19. Great! Thanks, I needed someone to explain clearly, and you did. Also, I need to know do I buy everything from Etsy? Also do you have a phone # ? Diana

  20. I made 3 coasters. I only used 6 caps. 1 turned out great. The other 2 coasters ended up rounded on top. How did this happen?

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