How to Fix Dimples in Epoxy Resin in Three Steps


How to fix dimples on a resin surfaceYou completed your epoxy art or resin tumbler. And you are SO EXCITED — until you see the surface isn’t even. On closer look, you see dimples in the service. Whatever you want to call these resin dimples — divots, holes, voids, fish eyes — they don’t have to wreck your creation.  Here are three steps how to fix dimples in epoxy resin:

Step 1: Figure out why the resin dimples happened.

If you don’t know why they occurred, you are likely to make them again. I discuss five reasons in this article, why does my epoxy have dimples. Make sure you know what happened, so you know how to avoid them moving forward.

Step 2: Figure out how deep your resin dimples are.

If your divots are one-sixteenth of an inch or less, mix and pour a new flood coat of resin. Make sure your resin surface is clean and that you use the right amount of a doming resin.  These resin formulas are designed to self-level and evenly coat a surface.  A doming resin self-levels to a one-eighth inch depth. It will even itself out over the entire surface if your holes are 1/16 inch or less.

Pro tip:  If you don’t know how much epoxy you need, this resin calculator does the math for you.  It’s important you use enough epoxy resin as a part of how to fix dimples.

Step 3: Sand down your surface if your dimples are one-eighth inch or deeper OR plan on multiple pours.

Since doming resin wants to level to one-eighth of an inch, you will need to sand the epoxy resin surface so the dents are less than one-eighth of an inch deep. This will allow the resin to cover the surface evenly when you apply another flood coat. If you haven’t sanded resin before, here are my resin sanding tips.

I do not like sanding resin, which is why I share another option of applying several flood coats of resin. Of course, this option costs more, but I find it’s easier for most people to get done. You simply need to decide if you want to spend your time sanding or spend your money pouring more resin.

Pro tip: When pouring a second (or more) layer of resin, it may not fill to the edge as well as it did with the previous layer. You may want to create a tape dam around the piece with masking tape or painter’s tape to make sure the resin gets to the edge.

Hopefully, by the time your resin cures the next time, you won’t need to ask yourself how to fix dimples in epoxy.

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Like this post? You may be interested in  Resin Jewelry Making: What Beginners NEED to Know

21 thoughts on “How to Fix Dimples in Epoxy Resin in Three Steps

  1. Katherine, I’ve got myself making a wood counter top for my kitchen counter. I’ve got the countertop resin, ready to go but I’m scared to death to do it for this very reason, fish eyes. It’s one solid piece of wood with sink hole cut out and I have to add on the molding around the edge. My question is, how do I keep the resin from going down in the crack where the counter and molding meet. I would also like the resin to flow over the edges bit. Should I just paint resin over the edge in thin layers and what kind of dam do a put around it? I’ve watched a million and one videos about this and I’m still scared to death. Do I just jump in and go with the flow(lol)? Lori

    1. Hi Lori, this project sounds so exciting! Without seeing your set up it’s hard for me to say what you can do to keep the resin from going through the crack. This article should give you some ideas on some things you can try: Painter’s tape works great to make a dam for the edge. As for the edge side — I would say go with what you think you will like better!

  2. When you say use tape to dam it up…

    If I am using a 1.5” thick canvas, do I put the tape up high to keep the resin at the top? If so, what is proper for covering the sides? Thank you!

    1. Hi Kathy, you only need to do the tape dam if you plan on doing a second pour. The height you make the tape is up to you, but an eight-inch height above the surface should be fine.

  3. Hi Katherine, I’m using clear art resin on top of coloured Hexagons, I unfortunately have placed one on top of another. I now have some dents. The dents have a opaque look, if I do another resin coat will these opaque dents still show through?? Do I need to
    Sand?? Thanks, Mitch

  4. Hello Katherine, I was working with some epoxy on my outdoor concrete countertops and I painted it black with some gray to give it a marble look. After that I have it a clear coat and after the clear coat the fish eyes seemed to appear out of nowhere. So I sanded it down and gave it another coat but this time with glitter mixed in it, and still the same problem, more fish eyes! What is your recommendation for all these fish eyes, thank you.

      1. Hi LM, it’s been my experience with Pam that it’s too greasy and can make the resin pit. I don’t recommend it as a resin mold release.

  5. Yesterday I did a small table top that has several dimples. I used the last of my resin on that pour. I have more resin but it’s a different brand. Is it ok to pour a flood coat to correct with the new resin?

  6. I just covered an outdoor bar with resin that was covered in pennies. We had a dam built with the trim of the bar. However, it leaked in the corners where the trim went together. This resulted in the epoxy being lower in the corners. Can I just pour more in the corners?

    1. Hi Loretta, while you can do that, you are going to see a line between the old and new resin. If you want a completely even surface, you will need to recoat the entire bar.

  7. Hello. I need help and would like to send you a pic of what I did. I think my surface was not cleaned and sanded enough, but I love it so much I really want to fix it and would love some advice pleae.

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