Maybe a far from origin problem due to a Autocad import?

This my try with Shape bender and DrawHelix.
This way with the first shape you can try multiple attempts modifying the line or and the path.

horn.skp

http://nogg.co/
And the merry go round...

Solid tools work only with solids.

Zorro2 is a very good an easy cutter.
http://forums.sketchucation.com/viewtopic.php?t=16038#p124862
And if you right-click a section plane you have the option to slice at section plane.
Also there is TIG's Workplane
http://forums.sketchucation.com/viewtopic.php?t=31204#p274345

@unknownuser said:

Dave R wrote:
Once you get that wrought iron work down you can work on something like this:

And the way to make it for real:
http://www.youtube.com/watch?feature=player_detailpage&v=l1_tF67B9CA

It works fine.

Thank you Didier.

Edit: same issue with lines to tubes.

In this case, no chance to change anything the file is scrambled.

@ driven, thanks for clarification, I'll try this.
When you know why it's half of the problem to be solved.
As we say here " s'il n'y a pa de solution c'est qu'il n'y a pas de problème".
" If there is no solution , there is no problem."

Dear Didier, don't be confuse I show one of your plugins but there are other from other coders with the same issue.
So I don't know where to dig.
It is not that important.
I use and try lots of plugins to work and I'm grateful to you all making such efforts.
" à cheval donné,on ne regarde pas les dents."

@unknownuser said:

i'm not going to learn the stuff though! maybe you will?

I have tried ( a little) but it is really not for me.
May be I should make a request to mac coders.

Thanks for trying to help. I wasn't complaining, in fact I had already this problem with OSX 4 and with SU7 and older versions.
It's just annoying, I though I could just change some lines in Ruby and tada!

Explose your component then type G (short key for component) then choose glue to horizontal, check the position of the axis and create. Done.

With lots of plugins using prompt windows I have this issue: I can't read the all text so I have to guess.
In this example "Créer des" (create) create what: faces, lines, group.....
So is this something relative with the plugin or with my OS?
Is there a way to fix it?

Make your shape a group.
draw the lines (a little longer than the perimeter).
convert line to tube (set precision to 4)http://forums.sketchucation.com/viewtopic.php?t=12354#p88592
then substract with solid tools or intersection.

If you select only the outer edges and choose the last icon of the toolbar it project edges along a vector.

Projection Tools by Didier Bur, maybe this can help:http://forums.sketchucation.com/viewtopic.php?t=20140#p167471

When you see the green preview shape press the down arrow key.

Playing with it I notice that it does not detect hole in face, this could be a great improvement.