View source for Vacuum Pump/Table

This guy has some great videos here is one to make your own vacuum table:
https://www.youtube.com/watch?v=fOrkvPF0pro

Here is a good reference on CNC Zone on this topic:
http://www.cnczone.com/forums/diy-cnc-router-table-machines/3302-vacuum-table-vacuum-pump.html

http://makezine.com/projects/make-41-tinkering-toys/shopbot-desktop-universal-vacuum-hold-down-system/

http://makezine.com/2013/08/27/behind-the-build-vacuum-table-2/

http://www.shopbottools.com/mProducts/vacuumholddown.htm

http://www.ebay.com/usr/clampusystem

http://clampusystems.com/VacTables.html