About this 3D model
This is a rendition of the Printrbot upgrade kit supplied to mount their aluminum direct drive extruder that is presented in a printable format. This kit is supplied if you order the extruder from Printrbot, however in wood. This is for the v1 Printrbot LC / Plus model. This would work well paired with GKRangan's printable version of the aluminum extruder: http://www.thingiverse.com/thing:281015 This design is simply an extruded STL version of the 2d layout for the laser cutting that Printrbot uses for their wooden version.