Previous research proved the potential of using mussel shell waste as additive manufacturing (AM) material. In this thesis, mussel shell powder was combined with sodium alginate, since it allows reversible cross-linking. Due to reversible cross-linking, this water-soluble and recyclable material can temporarily be made water-resistant, so it can be used for applications that need to be water-resistant. In this thesis, this material was researched, improved, and eventually used to print a prototype of a parametrically designed plant-specific planter.