Finally I discover 3D sweep

[rrijswijk104343]

If you want to make a 3D Sweep there is one way to do this...
For example: in this way I easilly can create tunnels!!

When you are in tje Sweep command there are two options in the Design bar. One is Sketch 2D path (this one we do NOT need) and Pick path (3D !!!!).

Now, you can select edges on multiple work planes or whatever you want.

It works!

If you want to try it, for making a 3D path one can use a ramp.

[DanielleAnderson]

A ramp edge is still a 2d sweep. Try creating a complex massing geometry where there is a 3d curve...this still cannot be done. You can create the geometry using a blend, then try to create a sweep and try to click on the 3d line but it is not selectable. It would be nice if that tool worked, but it truly does not create 3d "loft" lines. Not yet, anyway. :)

[Wes Macaulay]

You can sweep in more than one plane, but you need to draw the path first using reference or model lines. Model lines allow spline paths so there more freedom there.

The attached file is in R9 format.

[DanielleAnderson]

You can sweep in more than one plane, but you need to draw the path first using reference or model lines. Model lines allow spline paths so there more freedom there.

The attached file is in R9 format.

So, I apologize that I have not yet received R9, but is this a new and/or improved feature? Has the sweep tool changed from 8.1? My curiosity is definitely peaked.

[Wes Macaulay]

Uh -- no, it goes back to pre Revit 4, I believe.

[DanielleAnderson]

Hmm...when I get to Revit 9, I am going to take a look at that file because I think I am missing something here. So are you saying that all that time we had all those headaches about drawing 3d sweeps for monorail tracks was unnecessary? It was possible the whole time?

[Shaun v Rooyen]

Pick a path, any path. Yep, tools sure come in usefull when you know where they are 'n what they do.

[BWG]

What you can do in V9 that was not possible in earlier versions is having non-straight lines within a profile of a sweep that the path was either an ellipse or spline. Now that works, so now, there are many more possibilities with these tools.

[DanielleAnderson]

Pick a path, any path. Yep, tools sure come in usefull when you know where they are 'n what they do.

Thanks for the sarcasm. I was aware of the pick path command. What we were having difficulty doing was creating things like spirals. This is what my question was regarding.

[cphubb]

Still waiting for a lofter

[DanielleAnderson]

Still waiting for a lofter

That's what I thought.

[narlee]

Wes, I'm not aware you can draw model lines in more than 2D, unless it's new in 9.

[Wes Macaulay]

Model lines can be drawn in any plane -- which is how I built the sweep in the above post ;-)

[Shaun v Rooyen]

Thanks for the sarcasm. I was aware of the pick path command. What we were having difficulty doing was creating things like spirals. This is what my question was regarding.

Danielle, no sarcasm intended!!
Here is a simple spiral to check out (R9). Could be done in any version.

[Mike Hardy-Brown]

Hey Zeds,

Remember when I did the one attached.
original post found here (http://forums.augi.com/showthread.php?t=19570)

[DanielleAnderson]

Cool guys. Seems to work well for round objects. How would you deal with the transition if it was, say, rectangular?

[Mike Hardy-Brown]

Maybe to try that as a curved ramp, change the width

(Bit of a workaround though)

[Bryan Sutton]

There is no way around it - we need a loft profile along curve tool with the ability to have 2 (or more) profiles.
Also a 3d fillet / edge radius tool wood be nice.
This all brings forth the caveat of the potential performance hit when there are too many soft edges for Revit to write when such tools are not used sparingly.
cheers
Bryan Sutton

[Tobie]

The spiral only works with a round profile. If you use a rectangle the joins will not line up.
A series of curved ramps wall have the same effect.