Junchao Yang


Nadya Peek

︎under review. Fingers crossed!
Working with living materials allows us to reshape patterns of consumption and production.
Mycelium is one such living material that participates in decomposing biomass and redistributing the nutrients to reconstruct the surrounding environment. By caring for living mycelium in biowaste, we can make structural mycelium biocomposite materials. We introduce a novel method for directly 3D printing mycelium biocomposites without the need for molds or tooling. Our method comprises three main contributions: Mycofluid, a mycelium-inoculated paste that uses spent coffee grounds; Fungibot, a custom hardware system for 3D printing biopastes like Mycofluid; and a method for incubating mycelial growth within fresh 3D prints resulting in mycelium biocomposite parts. We illustrate our contributions through a series of objects showcasing our method and the material qualities of the parts. Notably, we demonstrate how living mycelium can fuse separate prints, enabling complex geometries that are otherwise challenging to 3D print as one part.

I built Fungibot, a toolhead compatible with Jubilee, to print biopaste.

I drank a lot of coffee and I collected the coffee grounds. I used these coffee grounds to make a 3D printable biopaste and then I grew mushroom on printed biopaste. This makes a mycelium biocomposite that smells like coffee.

A cool thing about mycelium is that it is living. It grows exponentially across any surface it touches by developing hyphal network filling all the void space. If we put two surfaces with living mycelium together, the interface will be colonized by mycelium, leading to bio-welding.

Illustration of a 3D-printed Moai statue, halved down the middle and laid flat for 3D printing. After the initial spawn run which lasted for a week, the outer surfaces of the statue became fully colonized by mycelium. We removed the prints from the incubation container, pressed the middle surfaces together, and then placed the fused one-piece back into the container. During a second incubation period, the mycelium continued to grow, effectively binding the two parts together.