Building a flexible CNC leadscrew nut

I got a kick out of this build.  The author was having issues using standard nuts for moving the table of a CNC around.  SO he switched to a custom build using rubber hose, and a rounded coupling nut.  He “rounded” the nut himself (wonder if someone should have told him you can buy couplings already rounded pretty cheap).  Its a nice build that will allow for some give when making quick changes in direction on the CNC.

http://www.instructables.com/id/Flexible-CNC-leadscrew-nut/