The model for the X-Carve 1000mm and its parts is available on GrabCAD Workbench
The reference file for the 3D printer extruder was taken from GrabCAD Library
The extruder will require to be machined in order to enlarge the feed and extrusion openings. More details can be found in the linked CAD files. It is highly recommended to carry out your own measurements specific to the extruder you own. These drawings are intended to provide a guide to share the required modifications.
You’ll need some basic experience for Lathe Machining. Please sought help from a workshop technician for extra help. The drawings are annotated with measurements in Rhino file. They may vary depending upon the model of your extruder and the glass rods you own. Again, these are closest possible representation of the hardware setup.