Wood based bulk material in 3D printing processes for applications in construction

Additive manufacturing of large scale solids can be achieved by using wood based bulk material (sawdust, wooden chips, etc.) in 3D printing processes. Thin layers of bulk are bonded selectively with a suitable binder thus forming layer by layer a solid of almost any desired shape. Preliminary tests were carried out using a defined assortment of wooden chips as bulk material and gypsum, cellulose, sodium silicate and cement as binder.