Hotend mount spacer for Wades Extruder

For J-head and E3D style hotends. 1.75mm filament.
I'm using it with this Wade's extruder - http://www.thingiverse.com/thing:961767

I use this to get my hotend securely mounted. The depth of the mounting hole for the Wade's extruder is 10mm. This spacer is 6mm, with the hotend at 5mm. This leaves the hotend mounting plate 1mm above the surface to allow you to clamp the hotend down securely.

Flat spacer - E3D v5 hotend

Spacer with protrusion - J-head

I made the spacer with the protru