Alright so I saw this awesome thing on youtube.
https://www.youtube.com/watch?v=m5OxVgH-T1I
The cool "rails and gears" is... yes whatever the heck this stuff is I want to incorporate this into my projects. Where, what, how do you get this kind of hardware/mechanical parts for furniture. Most of the stuff I saw for cabinet rails is just the standard low grade metal ball bearing or not quite so... fancy looking. I am sure this was custom made, but does anyone know of a secret nook or cranny somewhere that has things like this?