Valparaíso Makerspace, Mariana Boubet
Harvest the Bull-Kelp from the beach (only naturally detached blades found on the shore). Clean and fragment it into small pieces.
Oven-dry at 100 degrees for 2-2.5 hours.
Blend the dried seaweed pieces in a blender to grind the particles until they become a powder.
Add 16-20g of kelp powder to 100ml of water and heat at a low temperature for about 20 minutes, or until it becomes a thick gooey paste. This will be the binder of the composite.
The razor clam shells (collected from local fisheries) must be washed to remove remaining waste. Overn-dry the shells for 1 hours at 200 degrees - this will make the shells more brittle and easier to break down.
Place the shells inside a cloth and smash them with a hammer. Use a blender to grind the smaller particles until they become a powder. Use a 1mm strainer to control the particles of the powder.
Mix 50g of the bull-kelp solution with 100g of the clam shell powder.
Pour the mixture into a mould and let it air-dry for at least 24 hours or place it in a dehydrator at minimum temperature (35 degrees) until the piece is completely dried.