• This forum is the machine-generated translation of www.cad3d.it/forum1 - the Italian design community. Several terms are not translated correctly.

unsolicited considerations on 3d modeling with v5/v6

  • Thread starter Thread starter Lettore espatriato
  • Start date Start date

Lettore espatriato

Guest
Since this note is not exactly about the original post, I thought I would create a new one to avoid problems.

I take advantage of this victorious post in another discussion
in particular this video
to make some considerations on modeling 3d with catia v5/v6 (and with cad in general, because some considerations are also valid for others ).

Now, let's say that for 80-90% of users (and 98% of their managers ) maybe the thing is not interesting, because the majority looks after the result that is seen and because it seems that most Italian catia users are engaged to set standards of lines 2d, colors of views , sizes of arrows , shapes of tables , etc...

I would like to point out that mine doesn't want to be the usual "boom lament" on those who did the video . I respect those who have time and want to create similar videos . and, unfortunately, sometimes, I also use certain processes for "speed", "comodity" , etc.

But we say that (for example) in terms of "flexibility", "stability" and "simplicity", I don't think the optimal.

For example:

1) You can work without sketches. for a line, a circle, etc., do you really need to go through that instrument or could you use the usual 3d commands, limiting the "support 3d"?

2) also wanting to use sketches and in that way, why not use the "output" selection inside the sketch?

3) why use the "separa" or "explodes" command that creates a "dead" geometry?

4) if the symmetry is used, why do it of the individual surfaces instead of doing it only to "semi-forma" completed?

5) using the brep is a "fast" method at the beginning, but then when it comes to launching "update" of the solid or the surface, we have to go to re-check each vertex, edge .... a blood bath if you have objects a minimum complex . You have to get used to selecting the entities from the logical tree and not directly on the geometry . if it is not possible, there is probably a method to create another classic geometry that allows it .

6) just as far as point 5 . the solids are comfortable for so many applications, but if we start talking about (for example) parts of car body or similar, the controls for solids should be used only at the end, to "close the solid" or to thicken in the case of sheet . to the limit to make, for example, holes. because if you begin to apply fillet on the edges ( instead of between surfaces) as you do with solids, at each update, it touches "play to sharpen the view".

In a lateral note, please : septate catia (and cad ) in English. At least if you have to search for a command or solution for a problem, the resources you rely on are 10 or 100 times greater.
 
Last edited:
2) also wanting to use sketches and in that way, why not use the "output" selection inside the sketch?
instead of going out of the sketch and creating a further extraction of geometry, you can use this command:
5) .... classic example "extreme points" .
instead of selecting the solid/superficial/curve peaks directly on the model , you can use this
that creates an extreme (according to the chosen direction, which in turn should be something stable) in the logical tree of the part.
 
Thank you very much @expat manifold .
some of your advice I've been using them for a long time, others will start putting them into practice.
Sometimes, with breath on the neck for urgencies, you take shortcuts that turn back against you at a distance of time.
You never stop learning. Thanks again
 
Last edited by a moderator:
very useful command, it should be basic....
otherwise it is necessary to pass a file with the command and go copy-paste. . .
as you know, if you want to make advanced modeling with surfaces, you must have the appropriate tools.

Anyway.

Since you say it doesn't work for the basic licenses but it works with the copy-paste, you say it could work if you call it another way (like a macro )?
 
I also saw other videos of that user. every time it proceeds in a way that gives me the creeps... to me, just seeing the activated hybrid modeling makes me rizzare my hair (if only I had them). I agree with you on the video. the use of the command explodes in this specific case is from dismissal in the trunk. If he had to make a change to the hook he does? He has to correct the sketches, separate them again and then go do the "replace" one by one? and when does it regenerate? and if he had to make a family of similar products but with different quotas? then the mirroring for individual patches cannot be seen. I know so much that the user is a self-taught and that he does the modeling for pastime.
what he does in the video is all wrong
 

Forum statistics

Threads
44,997
Messages
339,767
Members
4
Latest member
ibt

Members online

No members online now.
Back
Top