Caterpillar has invested US$2 million in Fastbrick Robotics, the Australian company behind the builder bot.

Named Hadrian X, the quick-laying bricklayer is built on a 30 m (98 ft) boom arm attached to a truck. A 3D CAD model of the house is fed into the system, and following those instructions, the robot is able to cut and place up to 1,000 bricks per hour, taking into account doors, windows, features and channels for electrical wiring and plumbing. Thin bed mortar or other adhesives are delivered through the boom head.

Originally unveiled in 2015, the system has caught the attention of construction company Caterpillar, which has just partnered with Fastbrick through a Memorandum of Understanding (MOU).