I am including this category with “robotics” for two reasons:
3D printers are a mechatronic device, often being an example of a 2-axis cartesian robot (like a plotter, gantry or motion table),
and they are useful for rapidly producing robot parts like sensor brackets and grippers.

Snapmaker

A 3-axis, versatile 3-in-1 machine for 3D printing, 3D carving and laser engraving.
This is a nice idea and they’ve made the hardware design easier by simply using 3 off-the-shelf industrial linear actuators.
The rest of the development is in the “heads” and the software.
Website: www.snapmaker.com

Fig. 1:

CreativeBot Duo by Creative 3D Technologies LLC

A really large 3D printer, with dual printing heads.
Website: www.creative3dtechnologies.com

Fig. 2:

Fig. 3:

SparkMaker

A small 3D printer using SLA (Stereolithography).
The resolution looks good for producing small models. Not sure about the strength of parts.
Website: www.sparkmaker3d.com

Fig. 4:

Morpheus 3D Printer

This 3D printer has a large build area and uses DLP (Digital Light Processing) technology.
Website: www.morpheus3dprinter.com

Fig. 5:

GPrinter by Gooo3D

A 3D printer using UV DLP technology.
Website: www.gooo3d.net/eng/

Fig. 6:

Vaquform Inc.

A desktop vacuum forming machine. This could be very useful for Makers.
Website: www.vaquform.com

Fig. 7: