The Prusa i3 (iteration 3) is the newest and most current 3D Printer design by RepRap Core Developer Prusajr (source: http://reprap.org/wiki/Prusa_i3)

A Rod-type Linear Actuator based on the 40x40 V-slot profile

Build a Hot Wire CNC Foam Cutter with inexpensive 3d printer electronics.

A new derivative of the famous OX CNC, with increases strength, rigidity, and accuracy.

an 8020 build with 1010 extrusion (1") Square tubing Rough size is 24x24x36 (600x600x900) The expected usable print area 21.5x21.5X32"roughly (510x510x760) An XY 3D printer with 3 extruders and 3 Z-axis 0.9 degree motors the table (Z-AXIS) will lift up to the XY Carriage on 3 12mm linear rod and 3 8mm Lead screw's Corexy designs complete and Z-axis build is started don’t have a 3D cad system yet so building my prototypes on a pcb layout tool

Theoretical Working area: 38" x 24" x 6" Actual Working Area: 31" x 23.6" x 4" Positioning Accuracy: about 0.01mm

All metal frame 500mm bed Delta 3D printer