CncControllers

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.

cnc
http://www.kickstarter.com/projects/421256045/diy-desktop-cnc-machine links to kit available at http://www.mydiycnc.com/

http://www.mydiycnc.com/

http://blog.makezine.com/2011/07/12/complete-300-diy-desktop-cnc-machine/

http://www.zentoolworks.com/

http://www.kickstarter.com/projects/edwardrford/project-shapeoko-a-300-complete-cnc-machine

http://www.hobbyic.com/products.php?product=Hobby-CNC-Router-Engraver-Drilling-Milling-Machine-

http://www.cnc-step.de/ Stone engraving etc.

forums
http://www.cnczone.com/forums/stirling_engines/22227-low_temperature_differential_stirling-12.html

Laser
http://labs.nortd.com/lasersaur/

Diydrones cnc
http://www.customlasercutting.com/ custom cutting for $25

http://wiki.openpilot.org/display/Doc/BumbleBee

http://diydrones.com/profiles/blogs/cheap-cnc-opportunity#comments

SA cnc

 * http://www.cnc-step.co.za
 * http://www.cncsolutions.co.za

Contract cutters
http://www.tgc-eng.co.za/gallery

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

http://www.ultraflow3d.co.za

http://www.cncsolutions.co.za

http://www.strongman.co.za

http://www.ectrax.biz Bicycle engine kit

http://www.liquid-edge.co.za

http://www.thegadgetshop.co.za

http://www.greencubed.co.za

Elektor version
http://www.elektor.com/projects/pcb-prototyper-(100619).1599728.lynkx

Plasma cam
http://www.plasmacam.com/indexfla.php http://www.makerbot.com/ Make anything for $1300

Concrete cutter
http://www.youtube.com/watch?v=7BB9O4G7x8o&feature=related hack and reverse engineer

Steve
http://www.popularmechanics.co.za/searchadvanced_pm.php?searchString=steam+engines&x=0&y=0&searchBy=sr_rel_all&searchSortBy=sr_rel_all

The other day I took a drive out to Napier near Cape Agulhas to interview Kevin Doveton. He makes exquisite model steam and Stirling engines from his home workshop (to watch a video of one of Doveton's Stirling engines in action, |click here). This good-natured lateral thinker perfectly illustrates the kind of person I’m talking about.

http://www.popularmechanics.co.za/article/power-play-2009-10-01

1
http://www.instacom.co.za  GSM walki-talki
 * http://www.bestech.co.za car kits
 * http://www.iwarehouse.co.za laser dispersion lens trail cameras
 * http://www.setech.co.za  Solid edge software, gears 
 * http://www.ecotrax.biz bike engine kit
 * http://stumbelbloc.com Building blocks