New, really stable printer from U-Design Working area up to 300x300x300 BiB = Bigger is Better :) Nema23 Motors (high torque on XY axis) LM12UU Linear Bearings M10 & M12 Threaded rods (very stable frame) Highly recomended YRUDS extruder and new X-Carriage http://www.thingiverse.com/thing:38874 or direct 1.75 extruder http://www.thingiverse.com/thing:124544?save=success Better Z axis - just print flex-joints http://www.thingiverse.com/thing:34251 M10 to M8 (nuts) reduction for Z axis http://www.thingiverse.com/thing:124695Frame build - visual instruction http://www.mojreprap.pl/pliki/instrukcja_BiBONE.rar Upper Z holder designed for 6000 RS ball-bearing All linar rods - 12mm All linear bearings - LM12UU 4x 608ZZ bearings 2x Nema 23 motors (YX axis) 3x Nema 17 motors (Z and extruder) X-Carriage is designed for YRUDS extruder - ready for two heads !! Fresh STL's always on our board --> http://www.mojreprap.pl/board/viewtopic.php?f=22&t=95 At now only photo-instruction http://www.mojreprap.pl/board/viewtopic.php?f=23&t=288 Videos: http://www.youtube.com/watch?v=FpjraS-AW_0&feature=plcp http://www.youtube.com/watch?v=IO-CvadXPWw&feature=plcp