Copal mediums have the quality of making oil paint stay put, preventing the tendency to sag or run. This medium is ideal for painting detailed paintings. The hardness and high finish of copal made it a favorite material for use in exterior varnishes to resist weathering.

Ingredients:
2 parts copal varnish concentrate
1 part stand oil
2 parts turpentine or lavender oil of spike

  1. Stir all the ingredients together until they have combined.
  2. This formula produces an average consistency which can be varied by the amount of turpentine or Lavender Oil of Spike you to add.



How to use:

Because of its high percentage of copal resin, this medium works best used with tube oil colors, glazing or painting final layers of oil on the picture.