Changes

===Three-dimensional===

===Three-dimensional===

{{main|ZYX}}

{{main|Three-dimensional printer}}

3D printers are a new technology that enables users to print a solid object using a variety of materials.  These are used in private, educational, manufacturing, medical, and other venues.  To use this type of printer a user creates a 3D model on a computer, then sends the job to the printer.  The printer then constructs the object on a mat, by moving the nozzle (or print head) on a dual-axis assembly and releasing small amounts of the material where it is needed. In general, these printers are very slow in comparison to 2D printers, but the technology is still evolving and improving significantly.<br />

3D printers are a new technology that enables users to print a solid object using a variety of materials.  These are used in private, educational, manufacturing, medical, and other venues.  To use this type of printer a user creates a 3D model on a computer, then sends the job to the printer.  The printer then constructs the object on a mat, by moving the nozzle (or print head) on a dual-axis assembly and releasing small amounts of the material where it is needed. In general, these printers are very slow in comparison to 2D printers, but the technology is still evolving and improving significantly.<br />