Most inexpensive 3D printers use a type of lead screw to move some part of the printer in the vertical direction. A motor turns a threaded rod and that causes a nut to go up or down. The printer ...

An example comes from [Morgan Lowe], whose 3DLS lead screw driven 3D printer joins the ... It draws heavily from other A8 upgrades, and brings in some parts such as the extruder and bed from ...