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I have a diode and Aixis module on order from Senkat but it hasn't arrived yet so I decided to slap it together with a harvested 16x DVD diode and a simple module ripped from a $5.00 laser level from Freds. 
It is slid into a bushing that is held in place w/a piece of foam. 
http://www.youtube.com/watch?v=JZvnRNQHDgM
It is slid into a bushing that is held in place w/a piece of foam. http://www.youtube.com/watch?v=JZvnRNQHDgM