rhino problem 4.0

[ecomusposta]

Hello everyone here I am again breaking again.
I do not know that the topic should be put in this section or not (and therefore I apologize in advance with the moderators), and I assume that despite doing some research I did not find a concrete solution to my problem. we come to my problem, as from topical title I have a problem with rhino 4.0, I would perform a revolution on a surface but rhino imposes me to execute it on a curve. all this because I wish as a solid result. Technically it is nothing but a circle that revolves around a track or axis of revolution, I tried with sweep but comes out a surface, I tried with revolution but idem, at my point I tried with extrusion along a trajectory but nothing to do, the circle follows a wrong trajectory in the sense that it does not close as a curve. Now there is a way to extrude, or perform a sweep so that the result is a solid? Perhaps I know that this problem will be discussed a lot, but I have found nothing on the forum or at least on various search engines.
thanks in advance to all, and I wish you a good day! ! !
p.s. I come from the use of autocad where the revolution gave as a result a solid, so I found myself faced with this problem.
thank you all!! !

 

[Il marangon]

If you have to do, to understand a donut, just make a revolution of a circle around a axis and get a solid, I might say it as a polysurface but that is a solid.

to recognize a solid from a surface an empirical test is to extract the edges with the _dupborder command, if the result is a curve means that the polysurface is open otherwise it is sealed.
there is also a command to close all open edges of a polysurface _joinedge

 

[enri]

just convert the result into a solid by closing the surface. rhinos are not properly solid as in autocad, but perfectly closed surfaces, indicated with polysurfaces.

 

[ecomusposta]

Then my problem as clearly seen from the annex is that I would like to get a polysurface, but with the result of the sweep operation, with the extrusion you can see that the tube bends abnormally, the sweep operation gives me the result I want but gives me a surface not a polysurface. I also tried how he said enri to close it but I explain to you as I have to apply a boolean difference to empty the tube, it does not make me do it as it does not recognize me the polysurfaces. pulling the sums the result must be a tube with a tot thickness, folded in that way (according to the sweep curve), I think I was clear and apologized if I did not explain myself exhaustively.

 

[Il marangon]

If the model you have to do is what you posted there are gemstone errors, if it's just to understand the mechanism I try to explain to you with what you posted.

the steps you made are correct and you got surfaces. If you join them (command _join) you get a solid as you want.
Keep in mind that if you want to make a boolean subtraction the solid that will make you the hole would be better if it were longer than the solid to which you take it.
with the elements you put on the net you can not because the surfaces intersect at the point of the curve.
you can get what you want working with the surfaces and then join the whole.
if you have doubts ask
Hi.

 

[mariuss.r]

then my problem as clearly seen from the annex is that I would like to get a polysurface, but with the result of the sweep operation, with the extrusion you can see that the tube bends abnormally, .......

using the seep1 rail get a surface that you can close by turning it solid with the _cap command (solid menu->cap planar holes)

to be sure that it is actually a solid, it is necessary that in the properties of the object, (key f3) by clicking on the button details, the word appears:

valid polysurface. closed solid polysurface

even the solid that will create the hole you get it in the same way, taking care of though its edges escape from the main solid (as suggested by marangon)

At this point you can do the Boolean subtraction...which will inevitably fail!! .

the surface obtained with that trajectory and that section is self-intersected, and since the Boolean subtraction seeks the intersections, it falishes as a solid cannot be self-absorbed.
Just to be sure of what I wrote, I imported the solid and the internal surface into pro/engineer and attempted subtraction... which failed.

the only way to get the solid cable is the one suggested by marangon, by trimming the surfaces and then joining them.
in the attached file is the resulting solid.

I hope I've been quite clear.

 

[ecomusposta]

I thank you in particular to mariuss.r, marangon and also to enri.
in the design that place there is the tube from me made with regular direction and emptied regularly, now I would have another problem but + that trouble is a consideration. in the same design that I place there is a tube that I wanted to empty conically, that is giving it a angle of inclination to the vacuum.
I did all this by creating a main tube and then creating the shape to be emptied with a trivial revolution and closing it to make it a polysurface. Now I ask you there is no quick + way to create a tuvo conically emptied, I had thought of something but already experienced but smoked. then mainly create a surface (cylindrical) with base a circle equal to the diameter of the tube, and then close it with 2 different caps, one on one side + large and one on the other side + small, and joining them with Boolean union to make it come out the tube already emptied conically, but nothing to do already done and fails me from the classic error message saying boolean union failed. Is there any other way? If anyone hadn't understood what I mean, I'll be quiet.
However I thank once again for the answers given to me until now.

 

[Il marangon]

Boolean operations only work with solids or polysurfaces.

If your tube is right you can do it as a solid of revolution otherwise it touches you to work with boolean solids and subtractions (create the full pipe and the bubo that will give me the cavity and then remove it to the first) or work with the surfaces then join them and get your solid. depending on the complexity of the object you choose one or the other way.

other system is to use the command: _pipe that creates pipes following a board.
Also in this case you have to create the two only ones and then subtract them but the advantage is that you can give different diameters both to the extremes and in the middle of the axis.
I'll put you an example file.