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Forums >> Revit Building >> Technical Support >> Sketch a path greyed out...can't alter sweep path

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Mon, Jan 18, 2010 at 5:19:54 PM | Sketch a path greyed out...can't alter sweep path

#1

Studioe


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Joined: Mon, Dec 8, 2008
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Hey again folks..

 

I have previously created a custom column by extrusion along a path. It worked great.

Now I want to create another column with a similar profile but about three times the size.

I went into the column, renamed it and began the editing procedure - first scaling up the profile.

However, when I  go to edit the path, I have no sketch or line revision tools.

I've attached a screenshot showing the grey original extrusion, black lines of the profile, as well as the u-shaped path.

 

Suggestions?



Attached Images

71233_01_Jan._18_SH.jpg

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Mon, Jan 18, 2010 at 5:57:57 PM | Sketch a path greyed out...can't alter sweep path

#2

mhans


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Joined: Tue, Nov 7, 2006
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Pick a temporary path, i.e, any line perpendicular to tha profile and finish path. Edit again the path and you should be able to select "sketch 2D path" option by then.

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Mon, Jan 18, 2010 at 6:05:42 PM | Sketch a path greyed out...can't alter sweep path

#3

Studioe


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Tried is quite a few times...nothing. (see image)

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71237_02_Jan._18_SH.jpg

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Mon, Jan 18, 2010 at 6:19:29 PM | Sketch a path greyed out...can't alter sweep path

#4

WWHub


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If the "U" at the bottom of this view is the path you want, this sketch will not work because it doesn't fit in the path.  The depth of the legs is shorter than the depth of the sketch. 

 

I don't believe you will have path line tools in a 3D view.  I like to describe my path from a 2D view.


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Mon, Jan 18, 2010 at 6:20:45 PM | Sketch a path greyed out...can't alter sweep path

#5

JRMello


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It looks like when that path was first created it was done using the Pick Path option instead of sketch. Pick Path has you pick existing lines to which the sketch will be attached (much like locking a sketch). But once you've started a sweep with the Pick Path tool I don't think you can switch to a sketched path. You may need to recreate the sweep in order to use the Sketch Path tool. HTH.

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Mon, Jan 18, 2010 at 6:42:48 PM | Sketch a path greyed out...can't alter sweep path

#6

mhans


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See attached image. If you make a copy of a sweep and move it around and then edit it, the relation of the path to its profile is altered. The line above the larger profile in the image is the path. Your path is somewhere in your drawing area but since it is too small or too far from its profile, you don't see it. If you remember the first column you created, try duplicating it and edit the copy. Finish that model before moving that new column somewhere else.

Attached Images

71240_column.png

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Mon, Jan 18, 2010 at 6:45:07 PM | Sketch a path greyed out...can't alter sweep path

#7

Studioe


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I see what you're saying - the depth of the profile is deeper than the first leg of the path. Is that right?

I just made the leg langer than the depth of the profile, and it worked. Guess I'll have to create a void on the back to trim it?


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Mon, Jan 18, 2010 at 6:49:35 PM | Sketch a path greyed out...can't alter sweep path

#8

Studioe


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See attached images for the straight sweep, and then the final sweep with all three legs of the U, after I extended them to over the depth of the profile.

Attached Images

71242_03_Jan._18_SH.jpg71242_04_Jan._18_SH.jpg

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Mon, Jan 18, 2010 at 7:26:20 PM | Sketch a path greyed out...can't alter sweep path

#9

Studioe


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...and JR Mello, you're right I think. I could still not get back to the sketch mode.

I just draw out the lines for the path in the model (as opposed to drawingg them in the edit mode), and selected them in the edit mode after deleting the original path lines.

 

Thanks everyone!


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Mon, Jul 26, 2010 at 9:45:05 PM | Sketch a path greyed out...can't alter sweep path

#10

mLem


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Joined: Fri, Jul 16, 2010
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I appreciate this discussion... it's timely since we're working on a similar instance.A sweeping curved facade that sweeps in both the vertical planes, and horizontal planes. We call it 'the Eyebrow'  :- )

The challenge we are having is we have a facade that we are trying o layout a 'segmented' or 'facetted' curve (ie. straight line segments) for a fascia and soffit canopy to follow the line and tie into the Curtain wall @ Head Mullion.

The spline path profile worked fine... but does not sufficiently follow the 'straight' portions of the Eyebrow's profile for connecting to adjacent Construction substrate. I have as yet not been able to 'Sketch-a-Path' for the profile for multi-segments in 3 dimensions (XY & XZ as pointed out earlier).  However, I have created (attached below)  canopy profile to follow the XZ version multi-segment Sk-a-P sweep.

Is there a way to either map the path for 3Dims or create (or alter a 2D) a path for the 3rd D axis?

I appreciate the input and feedback.

Michael

 



Attached Images

79715_EIA_Eyebrow_2D_SkPath_Sweep.JPG79715_EIA_Eyebrow_Layout_w-2D_SwpPrf.JPG79715_EIA_Eyebrow_profile.JPG

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