This is the one I posted to the QB a couple of years ago:
http://www.quiltingboard.com/tutoria...e-t216324.html
http://www.quiltingboard.com/main-f1...e-t216312.html
There are 2 links there because it got splintered when a mod copied it to the tutorials section.
I've since made version 2.0 with Ikea parts and at standing height to match my cutting table but it's not quite ready for viewing yet.