Tom, I am interested in getting more information regarding the rotary adapters you make for the vacuum chucking. I have a Jet 1642 and would like to know what the cost would be and how it connects to the spindle. I sent you an email a couple of days ago, but never heard anything. Not sure if it's no longer valid, or if you have just been out of pocket for a while. Sorry for the duplicate message if you get them both. My email address is dad.duane@gmail.com Thanks. Dave