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How do you make watercolor with pigments?

Published in Watercolor Painting 3 mins read

You make watercolor paint by mixing pigment with a watercolor medium. Generally, a 1:1 ratio of pigment to watercolor medium is a good starting point, but adjustments may be necessary depending on the pigment and desired consistency.

Here's a breakdown of the process:

  1. Gather Your Materials: You will need:

    • Pigment: Choose a high-quality pigment suitable for watercolors. Pigments come in various forms, including dry powder.
    • Watercolor Medium: This is the binder that holds the pigment together and allows it to adhere to paper. A common watercolor medium consists of gum arabic, glycerin or honey (as a humectant), and a preservative.
    • Muller (Optional but Recommended): A muller is a glass or stone tool used to grind the pigment and medium together for a smooth, even consistency.
    • Palette Knife or Spatula: For mixing.
    • Mixing Surface: A glass or marble slab is ideal.
    • Container: To store the finished watercolor. Small glass jars work well.
  2. Prepare the Pigment: If using dry pigment, check for any lumps or clumps. You may need to gently grind the pigment with the muller on a clean surface before mixing to ensure a smooth consistency.

  3. Mix Pigment and Medium: Place the pigment on your mixing surface. Add the watercolor medium in small increments, using the palette knife or spatula to mix. Start with a 1:1 ratio (e.g., 1 tablespoon of pigment to 1 tablespoon of medium) and adjust as needed.

  4. Mulling (Optional but Improves Quality): If you have a muller, use it to grind the pigment and medium together. This process helps to fully incorporate the pigment into the medium and creates a smoother, more finely dispersed watercolor. Mull in a figure-eight motion, applying gentle pressure. This step can take some time (10-30 minutes), but it significantly improves the paint quality.

  5. Adjust Consistency: The ideal consistency is a smooth, creamy paste. If the mixture is too thick, add more medium. If it's too thin, add more pigment. Remember that watercolors should be transparent, so avoid adding too much pigment.

  6. Test the Paint: Apply a small amount of the watercolor to watercolor paper. Let it dry completely and assess its color, transparency, and flow. Adjust the pigment-to-medium ratio as needed until you achieve the desired results.

  7. Store the Watercolor: Transfer the finished watercolor to a clean, airtight container. Properly stored watercolor can last for many years.

By carefully combining pigment and watercolor medium and, ideally, using a muller, you can create your own custom watercolor paints.

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