So you’re asking yourself, ‘Why is my resin cloudy?’ And just as important — is it something you can fix?
This has nothing to do with water vapor and ice crystals. But there are four other reasons why your resin is cloudy.
Reason 1: Cloudy mold surface
If the mold you used to cast your resin has a cloudy surface, that same cloudy and frosty surface will impart onto your resin surface.
If you poured resin onto sandpaper, then demolded it later (which you wouldn’t be able to because resin makes a really great glue), the resin would have that sandpaper surface.
The same thing happens when you use resin molds. If you want a shiny finish on your resin, you must use a mold with a shiny finish.
This video explains more:
Reason 2: Cold resin
When resin gets cold, some of the components can crystallize. These crystals can show up as gray or white streaks in your resin.
Warm your resin kit bottles to dissolve the crystals before using them next time.
💡 Pro tip: Store your resin in a temperature-stable environment. The bottom of a dark closet works excellently for this.
Reason 3: Water contamination
Adding water to your epoxy resin will cause streaks. Not that you should ever add water to epoxy, but moisture from things you include in the resin can be the cause of this. All items should be properly sealed and dried before adding to resin.
Plus, you should never store your resin in a freezer or cold space. When the bottles warm, condensation forms under the lid that will drip into your resin.
💡 Pro tip: Glue that is damp will leave white streaks. Give it hours to days to thoroughly dry before putting it in your resin.
Reason 4: You mixed resin and hardener together incompletely
Your liquids will show streaks when you’re first mixing your resin. But these streaks disappear once your resin is mixed.
💡 Pro tip: Be sure you scrape the resin off the side of your cup and mixing stick too. You don’t want cloudy and sticky resin when you’re done.
Now that you know the answer to why is my resin cloudy, here’s how to fix cloudy resin.
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