How much pigment per gallon of Epoxy?

If you're trying to color a large epoxy resin project with pigment powders like micas, you might wonder how much mica powder you need for the perfect color saturation and finish. Mica powder is a popular additive among epoxy resin artists and woodworkers due to its unique depth, movement, and shimmery effects. However, using too little or too much mica powder can affect the final piece's transparency or special effects. So in this blog article, we'll explore how much mica powder per gallon of epoxy you need to get the perfect look.

View this post on Instagram

A post shared by Jenny & Doyle Massey (@pinesandneedle)

MEYSPRING Mystic Opal paired with cherry wood. Resin an Wood Artist: @pinesandneedle

What is Mica Powder?

Mica powder is a naturally occurring mineral that is ground into a fine powder, and it's available in a range of colors and metallic shades with a stunning shimmer. These mineral pigments are highly versatile, natural, and inert, so do not react or dissolve into any medium, making them ideal for coloring epoxy resin and enhancing the visual appeal of the finished product.

How Much Mica Powder Per Gallon of Epoxy?

MEYSPRING mica powders are highly pigmented, so a little bit goes a long way. The amount needed depends on the color, desired opacity and resin layer thickness. Start with a little bit of pigment and add gradually until the desired opacity is reached. Color and resin layer thickness might affect the end result.

Thin crafts and deep river-table pours can need different amounts of mica for the same apparent opacity. A thicker resin layer may appear opaque with less pigment per fluid ounce. Batch size alone does not determine the amount needed.

Choose the river-table setting below only for deep river-table pours of 1–8 US gallons. For small crafts, choose the small-craft setting, up to 16 US fl oz.

Measure mixed resin + hardener in a mixing cup using US fluid ounces or US gallons. Use level measuring spoons for an approximate mica starting amount. Spoon estimates do not verify the 3% weight limit; use a scale to check that limit. There is no universal grams-per-teaspoon conversion for mica.

One US gallon equals 128 US fluid ounces of volume. It does not necessarily weigh 128 ounces. Calculate a weight limit using the measured combined Part A + Part B weight.

Follow your resin maker’s mixing instructions and keep the Part A-to-Part B ratio unchanged. Test a small batch through the full cure before scaling up.

How to Add Mica Powder to Epoxy Resin?

Adding mica powder to epoxy resin is a relatively simple process. First, mix the epoxy resin parts A and B according to the manufacturer's instructions and ratios. Once you have your mixed epoxy resin, you can add the mica powder. We recommend adding the mica powder slowly and mixing thoroughly after each addition. This will help you achieve a consistent finish without clumping.

Tips for Working with Mica Powder and Epoxy Resin

Here are some additional tips to help you achieve the perfect finish:

• Use high-quality mica powder. Cheaper mica powders may contain impurities that affect the final result.
• Experiment with different ratios to find the perfect balance for your project.
• Mix the mica powder thoroughly to avoid clumping.
• Apply the epoxy resin in a well-ventilated area and wear appropriate protective gear.
• Allow the epoxy resin to cure completely before handling or moving the finished product.

Conclusion

MEYSPRING mica powders are highly pigmented, so a little bit goes a long way. The amount needed depends on the color, desired opacity and resin layer thickness. Start with a little bit of pigment and add gradually until the desired opacity is reached. Color and resin layer thickness might affect the end result. Keep mica at or below 3% of the combined resin + hardener weight (Part A + Part B), or your resin maker’s lower limit. Too much pigment can interfere with curing.

Also, check our blog article about Epoxy Resin Safety to learn all about the required PPE and working space recommendations.

Can't wait to see what you create! If you try our micas to color your epoxy resin adventures, don't forget to tag us @meypring or use the hashtag #meyspringpigments so we can see your creations.