SquareBOT 3D printer

Archive model. Not recommended for repetition.

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Actual version: http://www.thingiverse.com/thing:1731160

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The project is done!
The printable area is 247 x 257 x 193mm (XYZ) (a standard MK2 hotbed at this moment).
Z-axis may be any height and depends on the belts and vertical rods lenght.
To reduce the cost of construction I changed the motor mount on Z-axis for a standard Nema17 stepper motor (without gearbox) and the counterweight system: http://www.thingiverse.com/thing:798622
But with the geared motor Z-axis also works fine.
In this thing where is only Z-axis printable parts.
X and Y-axis parts are the same (except extruder mount on the block carriage). Download them here:
http://www.thingiverse.com/thing:479294 - for lightweight alum profile.
http://www.thingiverse.com/thing:637350 - for standard alum profile.
New "SB47" Extruder: https://www.thingiverse.com/thing:2658691
Extruder with geared Nema17 stepper: http://www.thingiverse.com/thing:516415
Extruder with Nema17 motor (without gearbox): http://www.thingiverse.com/thing:798580
PSU cover and fixers: http://www.thingiverse.com/thing:628747
New addon: http://www.thingiverse.com/thing:1014014

SolidWorks 2013 files of the SquareBOT (this version): https://grabcad.com/library/squarebot-3d-printer-2