To build a good 3D printer, you need a list of good and affordable suppliers. This list is free advertisement for those suppliers that make it easy for me to support them (Think ease, price, availability, free samples etc.)
Micro Robotics http://www.robotics.org.za/ (Arduino, Pololu, Sparkfun, Stepper motors etc.)
3D Printer Store.co.za http://www.3dprintingstore.co.za/( 3D Printing stuff, Filament, spares etc. )
RS components http://za.rs-online.com : All the electronics you need – with free shipping in South Africa, and if they don’t have, they’ll get – and in small quantities.
Chemical & Industrial Plastics http://www.ptfeplastics.com/ : PTFE (teflon) tubing, rod and anything else teflon…
Incledon platics http://www.incledon.co.za/ : PVC tube supplier
Communica http://www.communica.co.za/ : Crazy bonkers low Arduino pricing! I always felt ripped of, but now I know we always were…
More suppliers will be added as I find them!