That is exactly what happens Dave. Your explanation is a lot better than my description! Many thanks Tony. ----- Original Message ----- From: "David Everett" <deverett2003@xxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Friday, September 02, 2005 9:27 PM Subject: [modeleng] Re: Identifying collet chucks > Hi Tony > > Sounds like Myford collets. There will be a groove around the wide end > and that snaps into a > closing ring that screws onto the Myford spindle nose and draws the collet > into the taper of the > spindle. > > The tube is used to compress the collet to make it easy to insert it into > the closing ring. The > mushroom ended bit pushes the collet out of the tube once it has been > inserted into the closing > ring. > > Dave > Saudi-Arabia-On-Sea MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.