Writing an Icon
Part 2: Preparing the egg tempera paint.

All text in quotations on this apge are directly from John Walsted.

There are three processes involved in making egg tempera paint:

  • The pigments
    John usually does this ahead of time and stores his prepared pigments in screw-top jars.
  • Preparing the egg yolk
    This process is done immediately prior to painting. John mixes only enough egg and pigment to last for a painting session.
  • Mixing the pigments and egg yolk
    This process also takes place immediately prior to painting. Egg tempera paints do not last very long when exposes to the air, and they do not keep well, even in a sealed jar.

The Pigments

John uses ground mineral pigments. The pigments are stored in airtight containers to keep them dry until he's ready to use them.

Preparing the Egg Yolk

Separating the yolk.John starts with a fresh egg at room temperature (fresh eggs have a stronger yolk sac than older eggs). He cracks the shell and separates the yolk from the white by passing it back and forth from one shell half to the other.

The yolk has been separated and dried, and is ready to be pricked.When the yolk is completely separated from the white, John passes the yolk from the palm of one hand to the other, drying each palm as he passes the yolk to the other in order to dry the sac that holds the yolk. When done properly, the yolk sac becomes dry enough to roll gnetly around in the palm of John's hand without leaving a trail or sticking.

He then very gently picks up the yolk sac between his thumb and forefinger and pricks it with an artist's knife, allowing the yolk to run into a bowl and discarding the yolk sac. If any of the yolk sac mixes into the yolk, it will cause the paint to crack as it dries.Pricking the yolk sac.

 

Mixing the Pigments and Egg Yolk

John then mixes the pure yolk with an equal amount of water and a small amount of white vinegar. He spoons into the well of a palette a small amount of dry pigment with enough water to make a paste. Some pitments require a small amount of rubbing alcohol to break the surface tension and go into solution. He then pours in some of the egg yolk mixture.

Getting the right ratio of pigment to egg-water medium is not scientific. Each pigment requires a different amount of medium. John determines the correct ratio with a few trial strokes of paint on a test surface. If the paint looks chalky or dull, there's probably too little egg yolk in the mix. If the paint strokes take more than a few seconds to dry, or if they look greasy, there's probably too much egg yolk in the mix.

 

The picture to the right shows John mixing a dark brown color for the top of an angel's wing. This color is used for deep shadows, outlines, or folds in clothing. John adjusts the mixture and consistency of the tempera by dipping his sable brush into the dustalled water (picture number 6) and dragging egg yolk and pigment together in the well on his palette.

Shadows and skin tones on an icon may consist of several dozen layers of paint. The darker shades go on first, and successively lighter shades of color are applied over the top. This gives the appearance of depth. The finished picture has an almost porcelain look to it.

In picture number seven (below), John is writing the Synaxis of the Holy Angels icon. He's applying some dark shades to the edge of an angel's wing.

The next section shows the process of writing an icon from start to finish.

© 2001 John H. Walsted