On Sunday 21 October 2007, John Thornton wrote: >Hi Don, > >I am an Old Timer and the process you describe will not gain you anything >except dropping the chuck key from one side. > >I center parts on my lathe to 0.0001" all day long in a few seconds with my >4 jaw chuck. > >Short Parts: >Mount the part in the jaws as close to center as you can. >Indicate the part and set the indicator on "0" at the lowest reading. >Rotate the part to the highest reading, divide that by 2 >Rotate the part to the middle reading and set the indicator to "0" >Rotate the part so one jaw is lined up with the indicator and move the part >till it is on "0" >Rotate the part 90° and repeat. >Alternately tighten each jaw as tight as needed and end up on "0" > >Once I started using this method I don't even put the 3 jaw chuck on any > more.
Mine (3 jaw) is actually getting rusty, there's sawdust in the air in my combo shop. But like you, the 3 jaw hasn't been mounted in a couple of years. >Long Parts as described the other day. > >John > >On 20 Oct 2007 at 17:56, [EMAIL PROTECTED] wrote: >> I read somewhere that the Old Timers used two wrenches on a four jaw >> wrench, hand rotating the spindle by 90 degrees with both wrenches >> inserted. They would loosen one and tighten the other until they got >> the indicator dead on concentricity. So, go make yourself a second >> chuck wrench. >> >> 73, Don... > >------------------------------------------------------------------------- >This SF.net email is sponsored by: Splunk Inc. >Still grepping through log files to find problems? Stop. >Now Search log events and configuration files using AJAX and a browser. >Download your FREE copy of Splunk now >> http://get.splunk.com/ >_______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) "He's the kind of man for the times that need the kind of man he is ..." ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
