bottom up o top down consigli

[marcof]

calm calm .. if you have certain complex profiles
or if the sketch is shared in + processing (so by force of things is + complex
in comparison to a profile for a single processing ..) then can make sense starting from dwg credible ..

imho (and not only) complex profiles within a single sketch so that they are referenced to più feature diverse you should use with extreme parsimony. sharing the same sketch for multiple features is a different matter and independent from the complexity of the sketch.
importing complex profiles from autocad as such for, for example, the extrusion of a particular figure and already elaborated from the first feature can be the exception that, according to me, confirms the rule.
the substantial difference is that the representation that was made in 2d of a 3d object has little to do with the set of sketches necessary to create the same model on a cad3d and I repeat: in the traditional 2d the amount of geometry to draw is infinitely higher than what it serves to start in 3d with the first feature of extrusion to which the others will follow, all based on simple sketches.
even just thinking of using the three classic 2d views as a general layout to command a part in 3d seems simply absurd. a parametric cad allows less freedom of change than a contextual so we only lack to bind the whole story of the model to the sketch of the first feature. So much worth returning to the 2d...

 

[eugenesis]

. I don't say what the main road is to follow to start modeling.
almost always starts from scratch because there are different needs between modeling and design; I am only saying that sometimes it is done first to load from autocad; if for example I have to make an engraving of a tag with the logo of the company and in autocad
I already have everything done as a polyline (not written with fonts, but geometries ..) then dwg amount, I can also make a window
of selection, lock all the sketch and work in 2 seconds!! end !!!
If I had to do it from scratch, I'll spend 3 days and 3 nights!! ?

If I draw 2 circles, one in origin, I put some tangent-tangent lines, I put my quotas in autocad, then the amount with the various flags.
needs only the bond that coincides with the origin and possible alignment with the other center!!
If you don't work that way, then you have some problem on your PC; the tangency constraints, coincidence, etc. if you have to take them
All right?

 

[marcof]

. I don't say what the main road is to follow to start modeling.
almost always starts from scratch because there are different needs between modeling and design; I am only saying that sometimes it is done first to load from autocad; if for example I have to make an engraving of a tag with the logo of the company and in autocad
I already have everything done as a polyline (not written with fonts, but geometries ..) then dwg amount, I can also make a window
of selection, lock all the sketch and work in 2 seconds!! end !!!
If I had to do it from scratch, I'll spend 3 days and 3 nights!! ?

ok, in this specific case you do not have the tool to do the texts in sketch environment (but really in inv misses?) so these are precisely the (poche) exceptions for which it may be necessary to import a dwg, which then is a dwg that is neither bound nor quotated, and if you have to change the text or the font you are forced to return to the program with which you have generated the dwg. are basically accrocchi to
the topic concerned the possible import for the reuse of the historian in 2d by autocad of a company that produces automatic plants to remake everything with inventor and here there is no history, it is necessary to remodel 99.9% of the components.

 

[eugenesis]

I am sorry but I have not been clear enough. (not written with fonts, but geometries ..) .
when I have to model a corporate logo, and the fonts do not exist!!!!magari is something astistic created maybe fifty years
It does when there were still no computers! or there is an artistic design!!
take the example of the rampant horse of the ferrari, the gilera logo (which is also simple..) , the guzzi motorcycle aquila,
your sw can have all the fonts in the world but I dare you to do them before I go. I scan or unload an image
from the web, I recalc it + or not to the eye or in a precise way in autocad and then I shoot up in inventor .. fine!
What are you doing with your sw??
the problem arises especially in the creation of rooms with cartilages in table 2d .
to manage normal writings with fonts you normally do with inventor, we would miss, written straight, tilted, arranged
A circle, put on a spline in a parametric way, but this is another case!!

 

[marcof]

I am sorry but I have not been clear enough. (not written with fonts, but geometries ..) .
when I have to model a corporate logo, and the fonts do not exist!!!!magari is something astistic created maybe fifty years
It does when there were still no computers! or there is an artistic design!!
take the example of the rampant horse of the ferrari, the gilera logo (which is also simple..) , the guzzi motorcycle aquila,
your sw can have all the fonts in the world but I dare you to do them before I go. I scan or unload an image
from the web, I recalc it + or not to the eye or in a precise way in autocad and then I shoot up in inventor .. fine!

Well, at this point we are not talking about recovery of the historian in 2d to recreate a project in 3d, which is then the argumeto of the thread. excuse me, but what you're talking about is such a specific case that you are insignificant about problems and oppression or not working in 3d starting with 2d geometries imported from autocad.

What are you doing with your sw??

What do I do? I do before you. :smile:
The rare times I have to rely on an image, I do everything in swx. I don't even think about importing a raster to autocad it and then exporting a dwg to import into 3d as you do.
I'm going straight into the sketch, by hand or by autotrace. http://www.youtube.com/watch?v=fmmvuiqn8_0http://www.youtube.com/watch?v=9hwmg0gshgu

the problem arises especially in the creation of rooms with cartilages in table 2d.

the cartilage in Tables 2d . we are going more and more...

the theme was "opportunity-advantages in reusing the 2d of the autocad historian to remodel with inventor a 30 meter long automatic machine"

 

[eugenesis]

I have already said this before:
. I do not say absolutely what is the main road to follow to start modeling,
almost always starts from scratch because there are different needs between modeling and designon the specific I think we are basically in agreement .. ok