Material: Used coffee grounds pressed with PVA binding, air-dried;
Maple wood; (in 2nd edition Porcelain) Rice straw. Stone, glass
Additives: Paper, Plant roots (for example thyme)
I have experimented with many natural binding materials (mineral, plant, animal-based). I was looking for the ideal quality of a firm board: sturdiness, durability, and retaining the coffee aroma. In the end, I have settled on an ecological version of commonly used inorganic PVA glue, which is non-toxic and decomposable.
The material has been fully handmade, without the need for special machines or forms. Only in the finishing of a few specific objects I have used some traditional carpentry techniques like turning, cutting, and grinding.