If 3d printers are mature, will many people lose their jobs?

The progress of science and technology will inevitably lead to the backwardness of some industries and the unemployment of employees, but don't panic, people will still learn new knowledge to meet the needs of society.

As far as I know, 3D printing can only meet the production of some products.

For example, houses cannot be printed, because many disciplines such as mechanics are involved. 3D printing is nothing more than stacking adhesion or delamination. The molecular arrangement is inevitably inferior to materials and natural materials manufactured by wire drawing and forging, and it is difficult to withstand the shear force and stress requirements.

And the house area is relatively large. When you print them piece by piece, one piece will be made over there. It is even more unrealistic if the whole printing needs a giant transport vehicle to send them to the designated place.

I think 3D printing has greatly changed the workflow of the traditional design industry, which is a great progress and can effectively improve the design efficiency of the industry, but it is also limited to the design category. Production by printing technology should not be realized. This is not a technical problem, but a cost problem.