On 5/20/23 19:26, Roger Whiteley via Discuss wrote: > _______________________________________________ your msg is preventing it from being included in a reply But that pictured thread is not square, looks much more like the metric acme, 30 degree flanks. > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/>