Liquid Rainbow Resin Coaster DIY w/ video

I have always wanted to try to keep liquid flowing in resin. A resin coaster is THE perfect project for to try it! Might I say…it turned out AMAZING!!!

I have made A LOT of resin coasters through the years and this remains one of my all-time favorites!

There is a quick video tutorial at the end of this post, so you can see exactly how I did it!

Supplies You Will Need For The Resin Coaster

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  • Resin
  • When deciding on which resin to use for your coasters, you need to keep in mind whether you want it just for cold cups or for hot ones as well.
  • If only for cold drinks, you can be flexible and use whatever brand you like:
  • If you want it to work for both hot and cold drinks, you need to look for a heat-resistant resin, like these:
    • FX Poxy ~ According to the manufacturer, this one is heat resistant to 500° F.
    • Stone Coat

Liquid Rainbow Resin Coaster Directions

1.  Start with your coaster mold and take clear drinking straws and cut them to length. That way, they fit into the mold.

Holding clear cut straws by silicone coaster mold

2. Pinch one end of the straw with pliers and take a lighter to melt the end together. Once it has melted, you should have a clean edge.

Using pliers to pinch end of straw and melt with a lighter

3. Mix water and food color. Then, drip the liquid into the straws. This is what will we will be putting in the resin coaster.

Drip colored water into the straws

Do not fill them all the way because you want the water to have room to move around.

4. Take your lighter and seal the other edge.

Use pliers to melt the end of the straw closed

5. Mix one ounce of resin and pour it into the silicone coaster mold and pop any bubbles with a lighter.

Pour one ounce of resin into the silicone coaster mold

6. Place the filled straws into resin in the mold and let it cure for 12 hours.

place straws into the resin coaster mold

*The reason you need to let the resin cure is if you were to add more resin before the first coat cured, the straws would likely float.

7. Mix more resin (1.5 – 2 ounces should do it) and pour it over the straws.

Pour resin over the liquid rainbow straws

8. The straws should now be encapsulated in the resin. Use a lighter to pop the bubbles and then let it cure a minimum of 12 hours.

Use a lighter to pop the bubbles in the resin coaster

9. Once cured, pull it out of the mold!

The liquid rainbow resin coaster after it has been removed from the mold


Now, you have a resin coaster that has liquid flowing! You barely see the straws because they kind of blend in with the resin!

Liquid rainbow resin coaster tilted to the side

Finally, I want to make sure I give credit where credit is due! This video, by HelloMaphie, inspired this fun coaster!

Other Fun Rainbow Coasters I Have Made

As I mentioned earlier, I have made A LOT coasters and some of those are rainbow themed! Check them out!

Video Tutorial

Be sure to click on the video tutorial, so you can see exactly how I made it!

Amazing Rainbow Coasters You Can Buy!

If you want to add cool rainbow coasters to your home decor, these are pretty cool!

Thanks for stopping by!  

Remember:  Life’s too short not to shimmer, so grab your glue gun and your glitter!™  Stay safe!


6 thoughts on “Liquid Rainbow Resin Coaster DIY w/ video”

  1. did you really use water and food color, i ordered the straws you had a link to, the colored water barely moves, and the straw is a bit less than half way. condensation inside the straws makes for unsightly bubbles…so, ive tried 6 times, with no success….what am i missing and please only craft klatch answer


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