Mesh Mould uses steel wire:
The research project Mesh Mould investigates the unification of reinforcement and formwork into a single robotically fabricated material system. During the first research phase a spatial robotic extrusion process was developed, allowing to examine the interdependencies of mesh typology and rheological behavior of concrete (see Mesh Mould 2012 - 2014).
The second research phase at the National Competence Centre in Research (NCCR) Digital Fabrication focuses on the translation of the structurally weak polymer-based extrusion process into a fully load-bearing construction system. The current research focuses on the development of a fully automated bending and welding process for meshes fabricated from 3 mm steel wire.
The research involves the development of a fabrication-, and structurally-informed mesh typology as well as the subsequent collaborative development of a specialized robotic end-effector together with the Agile & Dexterous Robotics Lab of Professor Jonas Buchli.More information on this project can be found at:
digiFABTuring and their robot arm attached plastic extruder which is more similar to common 3d printheads and could be done in a home workshop:
Here is a complete wall system with 3d printed polymer matrix made by Branch Technology:
They 3D printed a 7-foot-tall-by-3-foot-wide wall in 30 hours, and are currently extruding at a rate of 1.5 pounds per hour. The wall has a spray foam insulation, concrete core and inside/outside finish layer.