I have been wanting to do this for a long time.
[IMG]http://i251.photobucket.com/albums/g...r/StopDown.jpg[/IMG]
[IMG]http://i251.photobucket.com/albums/g...ter/StopUp.jpg[/IMG]
[IMG]http://i251.photobucket.com/albums/g...fter/Valve.jpg[/IMG]
Next project is a vacuum lift.