This is Hugo. Named after Hugo de Vries who introduced the term "mutation".
It is a derivative of the original Printrbot by abdrumm, but all parts are redesigned and improved.
Some Improvements are:
- Nut traps everywhere
- Optional cross braces
- Centered y belt
- Carriage with 3 bearings
- Belt tensioner for x and y Belts
- Additional support in y direction
Build Instructions: Hugo_Build/de (original German)
There is a H-Assembly.scad, which is not perfect but shows a complete setup of the printer. To view this H-Assembly.scad I recommend to use the actual developer release of OpenScad e.g.  and to set the value for "Turn off render at ... elements" [edit->Preferences] to a higher value (I use 200000).
This WILL need good hardware acceleration to view in openSCAD, ensure you have a modern graphics card and if your in Linux ensure you have your graphics card drivers working - Thebaron88 18:49, 14 May 2012 (UTC)
There are several prebuilt .stl files to discover and to put your own assembly together or you build your own via OpenSCAD.
In general if you print H-Set1.stl and H-Set2.stl you should have all mandatory parts to build the printer. If you also print H-Set3.stl you should be able to setup the entire printer with reinforcements as shown in H-Assembly.scad. The H-Set7_PLA.stl contains all necessary linear bearings plus some extra, in case some come out in bad quality. This bearings should be printed in PLA because it is harder then ABS.
Print the H-TestObject.stl first to check the quality of your prints. It has the main difficulties of the printed objects in one part.
Bill of Materials
Printer Quality Test
|1||Quality Test Object||PLA / ABS|
There are 3 different models available:
Pb_Standard: It uses T5 belts which are commonly used.
Hugo_Standard: It uses T2.5 belts. This printer has been successfully sliced with “Slic3r 0.72b” with a 0.32mm Layer Height.
Hugo+: It uses T2.5 Belts and is designed for 12mm Z-Rods. This printer has been successfully sliced with “Skeinforge” and a 0.25mm Layer Height.
The table shows only a selection of parts. You will find extra/additional parts as well as alternative layouts for some parts on “github”.
The file download-links are for Hugo_Standard.
Basic Printed Parts
|1||Base Set||PLA / ABS|
|1||Y-Belt Divert||PLA / ABS|
|1||Y-Bar End||PLA / ABS|
|1||Bearing Guide Set||PLA / ABS|
|1||Endstop Holder Set||PLA / ABS|
|1||Y-Belt Clamp Set||PLA / ABS|
|1||X-End Set||PLA / ABS|
|1|| Gregs Extruder
(is this the same as Greg's Hinged Extruder ?)
|1||Extruder Gears Set||PLA / ABS|
|1||Y-End Foot Set||PLA / ABS|
|1||Y-Bar Clamp Set||PLA / ABS|
|1||Z Cupling Set||PLA / ABS|
|0||Print Set1||PLA / ABS|
|0||Print Set2||PLA / ABS|
|0||Print Set3||PLA / ABS|
Additional Printed Parts
Electric and Elektronic
Bar clamp: Bar clamp by Josef Průša 
Bearing Guide: Bearing Guide by GregFrost 
Also some modules and metric files from the two above.
Extruder: Greg's Wade reloaded - Guidler, Tilt Screws, Fishbone Gears by jonaskuehling 
Printrbot: THE Printrbot by abdrumm 
Thanks to all of them.