Geeetech Rostock301 magnetic effector upgrade

Magnetic effector for Geeetech Rostock 301 printer.
This effector is designed around the e3d v6 lite hotend, although the effector is designed that you can mount other hotends as well.

Each end of the rods will be held by three cylindrical magnets (top one countersunk).
The groove mount for the e3d v6lite hotend can be screwed to the effector for extra stiffness.