You 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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