Big RepRap linear bearing (printable)

grabcad

The upcoming 3D printers will significantly surpass their predecessors in size due to their ability to print entire houses including walls, floors, and roofs. Furthermore, these advanced printers will also manage to install wires and pipes while insulating walls and ceilings. Despite the existence of expensive and cumbersous industrial 3D printers that can print concrete, there is a possibility to develop an affordable yet functional alternative akin to RepRap (https://en.wikipedia.org/wiki/RepRap_project). As a starting point, I am considering designing a linear ball bearing assembly. Industrial bearings are costly and susceptible to deformation and contamination. However, 3D printed bearings may lack precision and durability. This intermediate model might prove beneficial for the future 'Big RepRap' generation.