Microscopic droids, known as nanotechs, served the purpose of rapidly mending fractures and fissures within buildings. Wat Tambor, a Foreman of the Techno Union, combined nanotechnology with bio-engineered fungi in order to construct his Mazariyan stronghold located on Xagobah. During the Republic's siege of his citadel, nanotechs were deployed to preserve the structural soundness of the fortress while it was under attack. Eventually, after numerous weeks, the damage became overwhelming, surpassing the nanotechs' capacity to manage it, and the structure started to collapse.