How To Make Cornstarch Bricks


Bricks have been used for centuries as a reliable building material. They provide strength, durability, and insulation to structures. However, traditional bricks can be expensive and require complex manufacturing processes. This is where cornstarch bricks come in! In this article, we will guide you through the process of making cornstarch bricks, providing you with a cheaper and more eco-friendly alternative.

Materials You’ll Need

To make cornstarch bricks, gather the following materials:

  • 4 cups of cornstarch
  • 2 cups of water
  • 1 tablespoon of vinegar
  • A stove or cooktop
  • A large pot or saucepan
  • A mixing spoon
  • Molds (e.g., disposable cups, ice cube trays, or silicone molds)
  • Parchment paper
  • A baking sheet
  • An oven

The Step-by-Step Process

Follow these simple steps to create your cornstarch bricks:

  1. In a large pot or saucepan, mix the cornstarch and water together. Stir until the mixture is smooth and free of lumps.
  2. Place the pot on a stove or cooktop and turn the heat to medium-high.
  3. Continue stirring the mixture as it heats up. It will start to thicken and become more difficult to stir. This is completely normal.
  4. Once the mixture thickens and turns into a gooey consistency, reduce the heat to low and add the tablespoon of vinegar. Stir well for a couple of minutes.
  5. Remove the pot from the heat and let the mixture cool down for about 10-15 minutes. During this time, it will solidify into a malleable dough-like substance.
  6. While the mixture is cooling, prepare your molds. If you’re using disposable cups, line them with parchment paper for easy removal. If you’re using ice cube trays or silicone molds, make sure they are properly greased to prevent sticking.
  7. Once the mixture has cooled down, take small portions and press them firmly into your molds. Ensure the mixture is evenly distributed and tightly packed.
  8. Leave the filled molds to dry for at least 24 hours. This will allow the cornstarch bricks to harden and set.
  9. After 24 hours, gently remove the cornstarch bricks from the molds. If they are stubborn, you can place them in the freezer for a few minutes to make removal easier.
  10. Place the bricks on a baking sheet lined with parchment paper and put them in a preheated oven at 200°F (93°C).
  11. Bake the bricks for about 2-3 hours. This will further dry them out and strengthen their structure.
  12. Turn off the oven and let the bricks cool completely inside. This slow cooling process helps minimize cracks and ensures the bricks retain their shape.


By following these steps, you can easily make your own cornstarch bricks to use in various construction projects. These bricks are not only cost-effective but also environmentally friendly, as cornstarch is a renewable resource. Keep in mind that while cornstarch bricks can be sturdy, they may not have the same structural integrity as traditional bricks. Consider using them for decorative purposes or as non-load-bearing elements in your creations.

Remember to handle the bricks with care, as they can crumble or break if dropped. Experiment with different molds and shapes to unleash your creativity and make unique cornstarch creations. So why not give cornstarch bricks a try? You’ll not only save money but also contribute to a greener and more sustainable future.

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