3d printers

http://www.3d-printer.co.za

http://www.ultraflow3d.co.za

http://www.sumpod.com/

http://www.indiegogo.com/projects/sumpod-3d-printer-and-mini-cnc-round-2

3D-Manufacturing
http://www.thingiverse.com/thing:7975

You might also want to mention: RepRap -- http://reprap.org Fab@Home -- http://fabathome.org and Thningiverse - http://www.thingiverse.com

Also, even though it's not 3d printing, shopbots might also be worth a hat-tip.

Bearings
http://www.instructables.com/id/Nylon-Printable-608-Ball-Bearing/ Nylonn printable ball bearings