Making 3D printing faster & cheaper is a challenge. How might it be done?
- many nozzles instead of 1
- machines that replicate and stack many high
- machines that run without human input, either entirely or mostly, thus mostly eliminating walkways etc
- maybe stacked cube shaped printers could be weatherproof and run outdoors.
- machines sense where there is already plastic and fast forward past those places. Now blocks or generic preformed shapes can be placed on the print bed to save time. Or even waste plastic lumps.
- machines place sand particles as well as plastic. Place molten plastic, then adding a sand grain doubles construction rate (very roughly) as well as reducing material cost.
It's all maybes, but fairly likely maybes.
Meanwhile 3d is already massively faster & will be much cheaper in house construction, a major industry.
NT