Google xlate: I am involved in a modeling project of a "sleeve" of hacksaw bench, and I need to design it in openscad, and do not know how to thread the sleeve, can anyone help me? Or anyone good with Portuguese? Marcos - a bit more detail is needed. Google Xlate: um pouco mais detalhadamente é necessário Maybe here <http://dkprojects.net/openscad-threads/> ----- Newly minted Admin - PM me if you need anything, or if I've done something stupid... 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. :) - Obviously 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/ time is running out! -- View this message in context: http://forum.openscad.org/Cilindro-com-rosca-externa-tp13687p13688.html Sent from the OpenSCAD mailing list archive at Nabble.com.

On Thu, Sep 03, 2015 at 09:28:27PM -0700, MichaelAtOz wrote: > Google xlate: I am involved in a modeling project of a "sleeve" of hacksaw > bench, and I need to design it in openscad, and do not know how to thread > the sleeve, can anyone help me? > > Or anyone good with Portuguese? > > Marcos - a bit more detail is needed. Google Xlate: um pouco mais > detalhadamente é necessário > > Maybe here <http://dkprojects.net/openscad-threads/> And https://github.com/openscad/MCAD/blob/dev/fasteners/threads.scad which is my rewritten version of that using sweep() instead of polyhedrons. It renders a lot faster and supports other trapezoidal thread profiles (ACME, buttress), while allowing for custom trapezoidal thread forms to be generated easily. -- Kind regards, Loong Jin

On Fri, Sep 04, 2015 at 02:09:14PM +0800, Chow Loong Jin wrote: > On Thu, Sep 03, 2015 at 09:28:27PM -0700, MichaelAtOz wrote: > > Google xlate: I am involved in a modeling project of a "sleeve" of hacksaw > > bench, and I need to design it in openscad, and do not know how to thread > > the sleeve, can anyone help me? > > > > Or anyone good with Portuguese? > > > > Marcos - a bit more detail is needed. Google Xlate: um pouco mais > > detalhadamente é necessário > > > > Maybe here <http://dkprojects.net/openscad-threads/> > > And https://github.com/openscad/MCAD/blob/dev/fasteners/threads.scad which is my > rewritten version of that using sweep() instead of polyhedrons. It renders a lot > faster and supports other trapezoidal thread profiles (ACME, buttress), while > allowing for custom trapezoidal thread forms to be generated easily. Oh, I forgot to mention, my version honours the $fs/$fa/$fn setting, so you might need to increase the resolution from OpenSCAD's defaults to get nicely formed threads. I recommend $fs=0.4 and $fa=1. -- Kind regards, Loong Jin