Andy, Have you considered turning a groove around the centre of the circumference and putting an 'O' ring in it? If you use a fairly fine thread - say something like 1mm pitch, you will still have plenty of retention and the friction the 'O' ring will stop it unscrewing however you adjust it... Large diameter 'O' rings are easily available from bearing suppliers - in fact, I use them as drive belts on my watchmakers lathes..
Ian ________________________ Ian W. Wright Sheffield UK > On Wed, Jul 21, 2010 at 11:56 AM, Andy Pugh <a...@andypugh.fsnet.co.uk>wrote: > > >> Given a 12mm / 1/2" thick aluminium / aluminum disc / disk of 80mm / >> pi" diameter with a thread on the entire cylindrical circumference, >> how best to lock the thread in place in a way that can be easily >> reversed and which will not damage the threads in such as way as to >> inhibit dismantlement? >> >> Ideas I have include a sort-of tangential saw cut through a >> part-threaded (with a taper / first tap) hole with a grub screw / >> setscrew in it (winding the screw into the unthreaded part pushes the >> slit open, locking the thread), A saw-cut in the plane of the disc / >> disk with a screw to locally squeeze or stretch the thread pitch to >> lock it, and a variant of the first idea where a wedge of the disc is >> cut out after the hole is part-threaded (possibly located with >> half-and-half roll pins). >> >> Any other ideas, or approaches that anyone has seen? >> >> -- >> atp >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Sprint >> What will you do first with EVO, the first 4G phone? >> Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Sprint > What will you do first with EVO, the first 4G phone? > Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.851 / Virus Database: 271.1.1/3019 - Release Date: 07/21/10 > 07:36:00 > > ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
