The Durbie V2 is a full linear bearing version of the original Durbie 3D printer based on the Prusa Mendel. The Durbie V2 can be purchased as a complete kit with everything you need from our web store (a choice of with or without RP parts): http://romscraj.com/carttoo/index.php?route=product/product&product_id=129 Qty required for each RP part can be found in the 'DurbieV2-RP-Parts-BOM' PDF file. Assembly Instructions (which also contains the non-RP parts BOM) can be found in the downloads section: https://github.com/romscraj/DurbieV2/downloads - The Romscraj Extruder is the default extruder for the DurbieV2. To build one, refer here: https://github.com/romscraj/romscraj-extruder Important notes if you are planning to build your own Durbie V2: - Most dimensions of holes and bearing holders are larger than actual. We use skeinforge with a slightly increased flow rate to give stronger parts (we enter a filament diameter value of 5-6% less than actual, or you can tweak packing density ratio as well to get the same result). We suggest printing out one of the parts, for example the 'x-end-motor' or one of the bottom bearing holders to check for fit (especially if you use a different slicing software, eg. Slic3r which has some hole compensation code in more recent versions which may give different results). Alternatively, the affected models may be modified - SketchUp .skp design files can be found in the 'SKP-files' folder.