Wade used buttress threads for a long time on their 8W collets and draw tubes for the 8A lathes. They're otherwise almost exactly identical to 5C, a bit longer. Makes it easy to change over to the much less expensive 5C collets in an 8A lathe.
--- On Fri, 4/5/13, dave <dengv...@charter.net> wrote: > From: dave <dengv...@charter.net> > Subject: [Emc-users] OT-buttress threads > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Date: Friday, April 5, 2013, 10:39 AM > Hi all, > > The wiki for buttress threads states the buttress threads > tend to fail > because only the first 4 threads are load bearing. > > In contrast to that is: > > www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA483296 > > Which uses them in a munition where failure us not usually > an > option. ;-) > > Does anyone have any experience or comments on either US or > ISO buttress > (pull) threading. > > I'm trying to concentrate the stress axially rather that > trying > to spread the collar as 60 degrees do. > > The reason for my concern is that the collar is welded and > the more > safety factor I can generate the better. > > TIA > > Dave > > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to > hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
