About this 3D model

**Not ready to go pro (reprappro that is), but want a step up from your old, worn out and heavy extrusion system?** Then you're in the right place. This what I am calling a *semi-professional x-carriage*, in that it allows you to attach a single reprap pro bowden extruder to your prusa mendel or mendelmax (with a 50mm center-to-center spacing on the x smooth rods). I have had a great deal of success with this upgrade. You can get the bowden parts from reprap pro here: http://www.emakershop.com/Seller=869 .you'll need to print the extruder and mounts too, get them here: http://www.thingiverse.com/thing:20968. There is a small foot sticking out the side, which is just a little nubbin I stick on to push my end-stop switch.