Coloring resin

Coloring resin

adding dye to resin

I resumed the coloring resin experiments this week.  For this block, I started working with the Alumilite colorants and the Resin Obsession super clear resin.  I mixed a smidge over 1 ounce of the super clear resin (25 cc Part A and 12.5 cc Part B to be exact), then divided the resin into 1 ounce mixing cups.  I then added a drop of each dye to the resin mix.

pouring colored resin into a plastic mold

I pulled out old standby assorted shapes mold 405 and prepped it with a light mist of Castin’ Craft mold release and conditioner 30 minutes before casting the resin.

coloring resin

So here’s where it gets all wonky.  Notice the resin cabochon marked green.  Except it’s not green.  All the other colors casted as expected.  (Yes, some of the colors are dark and it’s hard to tell the difference, but I inspected them thoroughly.)

colored resin cabochons

The blue casted with the expected color.  The green cast with a blue/green color.  It should have been closer to the green color of an emerald.

how to color resin

So what happened?  Why didn’t the green cast as green?  In order to get a clear casting resin, blue colorant is added to the resin part of a two part kit.  The green in this dye combined with the blue to make the resin more blue than green.  The good news is that the resin cured appropriately for all colors.  Yes, some of the colors were a little dark, which is probably a result of trying to color a small batch of resin.  I would expect it would be easier to control the depth of color on a larger mixed batch.



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Aja Jackson

As a beginner worlikg with resin I am just tickled pink that I have mastered not having any bubbles. I want to learn how to suspend items in the resin I think I’m going to keep an eye on it and when the resin starts to gel that would be a good time to put in beds in maybe they wont sink to the bottom what do you think?


Ok, I’m so happy I’m not the only one that this has happened to! I used the Alumilite green resin dye in Alumilites Amazing Clear cast and I got this really beautiful teal color. I actually really liked the color, so I wasn’t too disappointed. But it was FAR from the green advertised. So yeah, very similar even in the Alumilite resin. I haven’t tested it in white resin yet, not sure if that would make a difference.

Katherine Swift

Really?! I will pass that information along to Alumilite. They say their resin colorants should hold true in their resins.


Very interesting. I would suspect it’s a chemical reaction of some sort. I wonder if casting it in a larger batch would change that effect because it can effect how the resin heats up to cure. There is a definite difference in several of the resins and how they cure and react with inclusions, colourants, weather and other things, but usually subtle. It’s one of the reasons I like experimenting and reading your experiments, too.


I have been having the worst luck getting a true green in my casts lately, they are small pieces and they invariably turn brown when cured, I assume it’s the heat and the chemical reaction, I’ve tried all sorts of colorants.


When I make resin jewelry with items in it. I build it up in layers which takes a few days to make one piece but it sure is worth it. My next try is going to put air bubbles purposely into a resin piece.


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