Main RepRap wiki page (RepRap is the most widely used 3D printer among the "maker" community:
http://www.reprap.org/wiki/Main_Page
Build your own RepRap page:
http://www.reprap.org/wiki/Build_A_RepRap
Note: I believe the RepRap design is now up to 70% self-replicating. In other words, the RepRap can "print" 70% of the parts needed to build another RepRap.
MakerBot... 2nd most widely used 3D printer
http://www.makerbot.com/
http://www.reprap.org/wiki/Main_Page
Build your own RepRap page:
http://www.reprap.org/wiki/Build_A_RepRap
Note: I believe the RepRap design is now up to 70% self-replicating. In other words, the RepRap can "print" 70% of the parts needed to build another RepRap.
MakerBot... 2nd most widely used 3D printer
http://www.makerbot.com/