number 2, is the best than all of others

If I was at curious about buying & using such a system what would this video tell me? All of them tell me that it can print 3D house from a toothpaste tube like concrete flow and that is all. How much do they cost? How long does it take to learn how to print & use the system? Do they break down often? How hard is it to repair the system? How much per so many square feet does the house cost? Needless, to say this video is more a waste of time than a benefit to its viewers.

you don need to print a house, just several patterns for different shapes and wall turns and slopes to pump the material, making also a whole curated structure instead thousands of layers with poor adhesion thats it, cheap and available and hand made as usual, still in equatorial countries they have plenty of good house building techniques with earth derivatives and plant fibers

Which one was #4, and how to get one

Can you make a video comparing gantry and robotic arms?

what happened to pricing the actual equipment?

Redy for insects to distroy it