Finely ground (espresso) coffee grounds were dried in the sun and then sifted. Then mixed with binders (xanthan gum and carboxymethyl cellulose powders) and water. These are printed in a modified consumer grade fdm 3d printer using a syringe instead of the hot end. The resulting material is claimed to be as strong as unreinforced concrete, but is biodegradable.
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Finely ground (espresso) coffee grounds were dried in the sun and then sifted. Then mixed with binders (xanthan gum and carboxymethyl cellulose powders) and water. These are printed in a modified consumer grade fdm 3d printer using a syringe instead of the hot end. The resulting material is claimed to be as strong as unreinforced concrete, but is biodegradable.