Print Speeds
There is a marketing war with 3D FDM printer makers of who can advertise the fastest printing machine. Within the last year, the brag print speed has moved from 100 mm/s, to 300mm/s, and now to 600 mm/s.
Acceleration has leaped from 1,000 mm/s^2 to 20,000 mm/s^2
There are practical and physical limits on how fast hot melted plastic can flow from a pin-hole size orifice and be deposited in multi-layer, super thin layers. At the same time producing the highest quality practical printed item.