Even when you are very careful and very experienced, you may find yourself asking yourself how to fix bubbles in cured resin.
Unfortunately, when making resin coasters, I had one end up with bubbles underneath the leaves.
What happened to trap bubbles in the resin?
Because the leaves of resin had an edge, it made it easier to trap bubbles underneath. I should have looked under the mold while I was putting them in.
Bubbles can also form in resin after you add your charms and other items, especially if the air in the room is chilly. I live in British Columbia, Canada, and it was a bit cool when I made these coasters.
How to fix bubbles in resin
In this case, the bubbles occurred on what will be the bottom of the resin coaster, so they will be easy to deal with.
Step 1: Cut out the bubbles
With a sharp knife, cut around the bubbles so they’re open and can be filled like small molds. Opening them up like this makes them easier to fill.
Step 2: Mix more resin
Mix up more epoxy resin. Use the same epoxy type as you did before. If you don’t want to mix up a full batch just to fill in a couple of bubble holes, you can set the coasters aside for when you’ve got leftover resin.
Step 3: Raise your surface
Put your resin piece onto a curing rack. The curing rack has bumps to elevate the curing piece. So if there are any drips off the side, it won’t pool under the coaster, which is the front and ruin it completely.
Step 4: Fill the holes
Using the stir stick, carefully fill each bubble hole. When it cures, the resin will bond completely and the hole will magically disappear.
But don’t forget to check this new resin for bubbles. You don’t want to have to fix bubbles in your NEW batch of cured resin.
Step 5: Glaze the surface
Since the bottom of the coaster has a matte finish, and the hole repairs have a shiny finish, we should make the whole bottom shiny to hide the former bubbles further. After filling the holes, coat the entire surface with a thin resin layer, much like a glaze. We’re not trying to create a dome, just enough to cover the whole surface with wet resin.
As an added benefit, the shiny finish on the bottom will also make the finished coaster look ‘clearer’ from the top as well.
If you’re having resin bubble trouble, you’re not alone. It’s the number one question we get at Resin Obsession. Learn what you can do to avoid bubbles resin: 10 tips for getting rid of resin bubbles.
Worried you will never get this resin thing right?
Go from confused to confident when creating with resin. Get your copy of the instantly downloadable PDF book, Resin Fundamentals. The book teaches beginners everything you need to know to be successful with resin. Buy today and have a download link in minutes.
originally written by Kate Ledum
Unpublished Blog Posts of Resin Obsession, LLC © 2022 Resin Obsession, LLC