Meet Charlotte — The Spider Robot That 3D Prints a House in 24 Hours! Imagine ordering a brand-new home and having it 3D printed before your coffee gets cold. Charlotte, a spider-like construction robot from Crest Robotics and Earthbuilt Technology, can build a full-sized house in just 24 hours! This next-gen robotic 3D printing system uses local materials — sand, soil, and crushed rubble — to print durable, layered walls. No scaffolding, no concrete trucks, no wasted labor. Unveiled at the Inte