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michka:research:cooked_materials [2014-07-02 12:01] – created michkamichka:research:cooked_materials [2014-10-03 12:37] (current) – michka
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 ===by Chloé Lequette & Michka Mélo=== ===by Chloé Lequette & Michka Mélo===
  
-This page reports the afternoon of experimentations we had with Chloé Lequette, designer & biomimicryist co-founder of [[http://www.enzymeandco.com|Enzmye & Co]]. She taught me a recipe based on eggshells and starch-less flour she developed last year for the Designers Days in Paris, and we experimented further with this recipe, adding other ingredients.+This page reports the afternoon of experimentations we had on June 24th with [[http://biomimdesign.wordpress.com/|Chloé Lequette]], a friend, designer & biomimicryist co-founder of [[http://www.enzymeandco.com|Enzmye & Co]]. She taught me how to cook a material based on eggshells and starch-less flour she developed last year for the Designers Days in Paris, and we experimented further with this recipe, adding other ingredients.
  
 ====How to produce the material ?==== ====How to produce the material ?====
 +
 +===Step 1 - Eggshells===
 +
 +{{:michka:research:img_5686.jpg?300|}}
 +
 +   * Get some eggshells. 
 +   * Rince them so that they are clean. 
 +   * Carefully remove the inner skin/membrane.
 +   * Crush them in bits as tiny as possible.
 +
 +{{:michka:research:img_5700.jpg?300|}}
 +
 +===Step 2 - Flour===
 +
 +{{:michka:research:img_5690.jpg?300|}}
 +
 +Mix flour in excess of water and let it sit for a while.
 +
 +{{:michka:research:img_5697.jpg?300|}}
 +
 +Once you can see two fractions, a solid one sitting at the bottom of the flask, and some white water on the top, discard the water fraction and keep the solid fraction.
 +
 +{{:michka:research:img_5705.jpg?300|}}
 +
 +This step aims at dissolving the starch contained in the flour, and keep only the glutinous fraction of the flour.
 +
 +===Step 3 - Mixing===
 +
 +{{:michka:research:img_5707.jpg?300|}}
 +
 +Mix the glutinous fraction of flour with crushed eggshells. 
 +
 +The proportion changes the nature of the material. Chloé goes for 2/3 wet flour for 1/3 crushed eggshells, but she says that half-half is also fine.
 +
 +{{:michka:research:img_5708.jpg?300|}}
 +
 +===Step 4 - Forming===
 +
 +{{:michka:research:img_5715.jpg?300|}}
 +
 +You can either mold it, or use a syringe as an extruder.
 +   
 +===Step 5 - Drying===
 +
 +{{:michka:research:img_5725.jpg?300|}}
 +
 +Then, just let it dry overnight. You can accelerate drying by using a microwave. One minute at 1000 W is too much, but five minutes on the grill position were fine.
 +
 +===Final Result===
 +
 +We ended up with slightly plastic objects of diverse shapes. They do not hold water very well and start to disagregate if they contain/are dipped in a liquid. This material is therefore more for decorative purposes, as a coating on vases, for instance.
  
 ====Others experimentations==== ====Others experimentations====
  
-====Conclusion====+{{:michka:research:img_5716.jpg?300|}} 
 + 
 +We tried to replace crushed eggshells by some mineral powder with found in a jar here at FoAM.  
 + 
 +{{:michka:research:img_5717.jpg?300|}} 
 + 
 +The liquid material looked very nice. However, it did not work out well, as many cracks appeared when drying. 
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