Accessible Wade extruder pusher

This is the extruder pusher which goes on top of an x-carriage.

It was adjusted for Arcol.hu hotend v4, link:
http://blog.arcol.hu/?p=1979

And goes on top of the x-carriage, thing:39923: http://www.thingiverse.com/thing:39923

For the full setup, please refer to this detailed article/howto: http://blog.arcol.hu/?p=1991

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This thing is based on thing:17030, thing:6703.
The modifications are really minor, basically size adjustments (holes, nuts, etc). I also added skirt for warpless printing (from ABS), from pla it is not an issue.

The license is the same as the ancestors.