have a look in libraries/mcad/screw.scad and search thingiverse.com for 'screw'. ----- Unless specifically shown otherwise above, my contribution is in the Public Domain; To the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. This work is published globally via the internet. :) Inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ -- View this message in context: http://forum.openscad.org/Creating-screw-threads-tp10306p10416.html Sent from the OpenSCAD mailing list archive at Nabble.com.