The book which has a selection of standards is Gears for small mechanisms by W.O. Davis, it was reprinted by TEE publishing ISBN 1857610156 Note the correct form has a rectangular root which stops the end mill kludge. We just used the Thornton cutters to get it right.
The cycloidal form has a number of "standards" swiss,black forest and the british one based on the swiss. http://www.clock-works.clara.net/cata/wnpc3.html Dave Caroline ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
