Mica powders in arts and craft

What are Mica PowdersIn this artical, I will discuss mica powders as inorganic pigments. More specifically, I will refer to there addition to paint mediums and coatings and applying them as metal finishes. Usually, a specific color of mica is made by grinding a natural mica to a specified partical size and then applying various inorganic additives that create the desired color by creating and interference layer. The light strikes the modified mica and bends creating the color needed. This is very simular phenominon that you will find in a parking lot where oil and water meet. For a more technical essay on this topic click on this article about polarization and interference colors. A good place to buy micas is cosmetic and soap maker suppliers and these are the largest nonindustrial consumers of these pigments.

How my use of micas differs

Most crafters just use mica powders for scrap booking, embossing, or perhaps for precious metal clays. This link is a typical example of these uses and does link to related articles. What I am offering here is a truly unique perspective on using mica in art. One I will talk about the adding the mica to a clear painting medium and two I will relate this to applying a painted finish on metal art. In this article I will talk my experience with a water based acrylic medium. More specifically, the 3D crystal lacquer made by Sakura craft . This seems to be most preferred 3D lacquer for crafters. It is water based acrylic that is thick and dries especially shiny. More on acrylic paints can be found here . All water based acrylics are opaque but dry clear as the water evaporates. This is because water based acrylic paint is an emulsion. Later, I will write about adding micas to oil based mediums.

An Application example

The pictures I am adding show two candle holders my wife asked me to repaint for her. We paid $2.99 for them at Goodwill and they where cheap steel artifacts mass produced in China that had the most hideous fake brass paint on them. This was chipping off so I used my steel bristle brush to finish off the coating. I applied Rustoleum white primer and flat black spray paint. The black finish was to be my canvas to which I would work. Since these works are our personal use, this was an experiment in technique and a learning experience. I learned that you need very little pigment for a given volume of medium. Especially if you are using the special interference micas that appear white but have coatings that change color on light angle. Too much of these leaves the finish very frosty looking. I had this problem with the moon holder and I used hot soap water to strip down back to the black finish. As you can see using cautions in mixing works very well.

This particular finish was a deep blue metallic blue with a light coating of interference purple.

This gave the moon a peculiar blue violet look which I feel the real moon possesses. Look how I did the sun one.

This has two interference coatings. One is copper interference and a slight accent with red interference on the rays. Here is what they look like together.

The gold and silver finishes are yet another technique using waterbased acrylics. This will be covered in an other installment.

**UPDATE** Just want to inform those still reading that I have created a a squidoo lens about Mica powders in art and crafts based on this blog entry and will be adding more content to it in the future so be sure to check it frequently.