CAD Forum discussion (EN) : HELIX non perfect radius https://www.cadforum.cz/forum_en/ Wed, 20 May 2026 10:40:08 +0000 Fri, 28 Apr 2017 15:35:36 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://www.cadforum.cz/forum_en/RSS_post_feed.asp?TID=12301 <![CDATA[CAD Forum discussion (EN)]]> https://www.cadforum.cz/forum_en/forum_images/web_wiz_forums.png https://www.cadforum.cz/forum_en/ <![CDATA[HELIX non perfect radius : At least someone is happy today....]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34655&title=helix-non-perfect-radius#34655 Author: John Connor
Subject: 12301
Posted: 28.Apr.2017 at 15:35

At least someone is happy today.]]> Fri, 28 Apr 2017 15:35:36 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34655&title=helix-non-perfect-radius#34655 <![CDATA[HELIX non perfect radius : Here we are, also OK in the...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34654&title=helix-non-perfect-radius#34654 Author: philippe JOSEPH
Subject: 12301
Posted: 28.Apr.2017 at 15:32

Here we are, also OK in the plan view.
I would have eventually questions about "vecteur de tangente" DĂ©part et Finale but it's already a miracle.


Edited by philippe JOSEPH - 28.Apr.2017 at 15:34]]> Fri, 28 Apr 2017 15:32:09 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34654&title=helix-non-perfect-radius#34654 <![CDATA[HELIX non perfect radius : Hello again Jochen and John,...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34653&title=helix-non-perfect-radius#34653 Author: philippe JOSEPH
Subject: 12301
Posted: 28.Apr.2017 at 15:15

Hello again Jochen and John, Some friend here told me about his memory of AutoCAD 12 and how he did those lisp and now it works !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thanks again for all.
]]> Fri, 28 Apr 2017 15:15:30 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34653&title=helix-non-perfect-radius#34653 <![CDATA[HELIX non perfect radius : Hi Philippecan you send me your...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34652&title=helix-non-perfect-radius#34652 Author: scj.schulz
Subject: 12301
Posted: 28.Apr.2017 at 15:10

Hi Philippe
can you send me your email-adress so I can do the HELIX-curves for you and explain the way how to use the LISP.
And - yes : "acc" is the accuracy.
This is the number for the points of the 3DSPLINE - i.e. a large number means a better approximation.
Good luck
Jochen
scj.schulz(at)t-online.de

]]> Fri, 28 Apr 2017 15:10:55 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34652&title=helix-non-perfect-radius#34652 <![CDATA[HELIX non perfect radius : Yes John, now I will try and...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34651&title=helix-non-perfect-radius#34651 Author: philippe JOSEPH
Subject: 12301
Posted: 28.Apr.2017 at 14:28

Yes John, now I will try and create that lisp file with a copy/paste of the text given by Jochen, thanks a lot.
I use some lisp files but I didn't create them.
]]> Fri, 28 Apr 2017 14:28:24 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34651&title=helix-non-perfect-radius#34651 <![CDATA[HELIX non perfect radius : The first step is to copy and...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34650&title=helix-non-perfect-radius#34650 Author: John Connor
Subject: 12301
Posted: 28.Apr.2017 at 14:03

The first step is to copy and paste the lisp routine into a text file that is created using any ASCII text editor like Notepad which comes standard with Windows.  Edit the code for the height and radius of your helix then save it as a .lsp file.  You can name the lisp file anything you like but make it something that will be recognizable.  You know how to do that right? ]]> Fri, 28 Apr 2017 14:03:36 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34650&title=helix-non-perfect-radius#34650 <![CDATA[HELIX non perfect radius : OK John, I have seen the result...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34649&title=helix-non-perfect-radius#34649 Author: philippe JOSEPH
Subject: 12301
Posted: 28.Apr.2017 at 13:51

OK John, I have seen the result and I don't know how to use the program ( and also how to make a lisp file but I use some that where given to me ).
I'm a basic designer ( with some age and experience in my specific work ) but I don't know about programs.
I have learned 3D on my own with the AutoCAD printed book ( R13 year 1995 ) and PDF books from AutoCAD 2006 to 2012.
Jochen, I have some problems with the connection with the site www.black-cad.de, maybe not allowed to reach here in my work.
The datas of the 2 HELIX that I want are in my AutoCAD drawing :
HELIX G1 : Radius 85 m , height of one complete turn : 121.76780370 m ( or 38.82315600 m for 114.77.858461° )
HELIX G2 : Radius 62 m , height of one complete turn : 91.54614061 m ( or 29.18488500 m for 114.76790316 ° )
In other words, could you do it for me in AutoCAD 2012 dwg file ?
 
N.B. I understand set height 100 , set radius 100 but I don't understand what is acc(uracy) 10000 ( is it the number of points of the helix ? )


Edited by philippe JOSEPH - 28.Apr.2017 at 14:22]]> Fri, 28 Apr 2017 13:51:54 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34649&title=helix-non-perfect-radius#34649 <![CDATA[HELIX non perfect radius : See my post that is just above...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34648&title=helix-non-perfect-radius#34648 Author: John Connor
Subject: 12301
Posted: 28.Apr.2017 at 12:56

See my post that is just above yours.

You do know how to load a custom lisp program don't you?


Edited by John Connor - 28.Apr.2017 at 13:48]]> Fri, 28 Apr 2017 12:56:20 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34648&title=helix-non-perfect-radius#34648 <![CDATA[HELIX non perfect radius : Yes John and Jochen, I don&#039;t...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34647&title=helix-non-perfect-radius#34647 Author: philippe JOSEPH
Subject: 12301
Posted: 28.Apr.2017 at 12:53

Yes John and Jochen, I don't know how to use the program.]]> Fri, 28 Apr 2017 12:53:35 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34647&title=helix-non-perfect-radius#34647 <![CDATA[HELIX non perfect radius : Are you saying you don&#039;t...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34646&title=helix-non-perfect-radius#34646 Author: John Connor
Subject: 12301
Posted: 28.Apr.2017 at 12:35

Are you saying you don't know how to use the program provided by scj?

In my test of the program it appears to run on its own.  I think the user can change the accuracy, height, and radius by editing these parameters found within the body of the code.  

(setq acc 10000)
(setq height 100.0)
(setq radius 100.0)

Using the presets I got the following results (plan view / SE isometric view):




Edited by John Connor - 28.Apr.2017 at 13:48]]> Fri, 28 Apr 2017 12:35:58 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=12301&PID=34646&title=helix-non-perfect-radius#34646