This is my deign for an adapter for the GeeTech All Metal hot end (http://www.geeetech.com/assembled-all-metal-longdistance-jhead-for-bowden-extruder-p-789.html) which is supposed to be used with a Bowden extruder, but I have made an adapter plate for this to be used with the Gregs extruder setup. The plate comes in two parts, as it mounts lower down the spindle then usual, this allows for a sturdy setup, and the hot end does not move at all in the extruder.