Step one

Weigh all the ingredients with a precision scale.

Step two

Mix the powder together with the glycerin and the olive oil.

Step three

Add the water and use a mechanical blender to obtain a homogeneous solution.

Step four

Cast in a silk screen print frame ( you can create your own using any textile and wood)

Step five

Mix the Calcium chloride with water in a sprayer bottle.

Step six

Spray the biomaterial on top and bottom with the calcium chloride solution.

Step seven

Let the calcium chloride act for 5 minutes and rinse with clean water.

Step eight

Let the composite sample dry in a dry and warm place for one week. Depending on the thickness and the size of the sample it may take longer. It will also vary due to the local temperature and humidity.

Step nine

When the product is dry you can separate it from the frame.

Step ten

Notes: As the sample dries, it can become curved, so place it between two level surfaces and some weight on top so at the end we can obtain a really flat sheet.

Variations: The less glycerin the more rigid the composite will be. You can substitute the olive oil with other oils. We have made the same recipe with orange peels. The orange peels need to dry in a food drier or oven and blended to powder.

This recipe has been used to create a leather bag prototype and we'll be showcasing this in the future version of the Materiom platform. 

1. The first step is to ensure that the coffee material is flat.

2. Create a design using Rhino 5 or other programme

3. Test the material in the Laser cutter: cut a small piece on different settings

4. Cut the ready coffee material sheets using laser cutter

5. Treat any edges

6. Put the bag together.