MH3000 Z micro switch

Get rid of your course threaded optical sensor that is a royal PITA to set. This takes a little work but is worth it!

First you need a few things.
I used the small micrometer from this set at harbor freight:
http://www.harborfreight.com/3-piece-micrometer-set-66512.html
I also ordered these micro switches part number ES3RL:
http://www.amazon.com/Endstop-Microswitches-3D-Printer-CNC/dp/B00G2E6UZC/ref=sr_1_1?s=industrial&ie=UTF8&qid=1408573041&sr=1-1&keywords=endstop+microswitch

Firs