Instructions
Here's a link to instructions
flickr.com/photos/48982649@N07/sets/72157626095454522/detail/
Link to the rod:
servocity.com/html/1_4__precision_shafting.html
Link to the bearings:
vxb.com/page/bearings/PROD/3mm/623ZZ10-1
Here's a video of it doing it's thing:
flickr.com/photos/48982649@N07/5247415100/
It seems it was a good idea to put the nut on the threaded rod at the same height as the nozzle tip.
flickr.com/photos/48982649@N07/5324656172/



