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Forums >> Revit Building >> Technical Support >> Someone help with this modeling
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Joined: Fri, Sep 24, 2010
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I have this entry sign that I am trying to model in revit and I just can not get it to work. Can someone please help with this. I have attached an autocad trying of the sign. Any help would be greatly appreciated, Thank you!
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USE sweeps blends to achieve thebody, the top can be made with a revolution. The words and signs can be done with 3d model text. Hope it helps.
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thanks but i still dont see how you are going to get the top of that....ill just keep trying i guess.
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Looking at that sign shows why Revit is far better than CAD. Each elevation is done as if the planes are flat. But they are not! So the text and graphic either is relieved into the surface, has some thickness and has a flat face or it would be warped around the curved surface. No indication in the drawing as to what it should be.
The over all form is relatively easy as nasty shows. But you can't warp the graphics around that shape. You can have 3D text that you might rotate individual letters around the curve. The graphic can be done as a simple extrusion the using a void to cut it back to the curved face.
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for me the text thing is easy, i just cant visualize that form for some reason....i messed with it for another half hour or so and just cant figure it out. Im not very advanced in creating different forms. I did it in autocad without a problem but i am not satisfied with that, i want it created in REVIT.
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The eclipse form itself is not easy since you can't do it with one revolve, nor you can do it the way nastyclown describe. You just can't get the top part to join nicely with the swept blend below
You should try it (I did without success) I would like to see what others can come up with to create the shape in family editor. (I know this will be fairly easy in the conceptual mass environment, but not typical family editor) and I can understand what renderforfun is struggling.
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i would really love for someone to make a video of how to do this or give good direction, since its sooooo easy.
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This is a generic family of the shape only, you can add your text and signage yourself. This would turn out better in Conceptual Mass but the question was how to do it in the family editor so here you go. It was easy but time consumming..
I used sweep blend all the way to the top, I just added more construction lines the closer I got to the top to get the exact shape of the elipses as it tapperd down. If done in Conceptual Mass you do it the same way but when done it will be one element vs many as in this example.
I hope this helps
Edited on: Mon, Jul 11, 2011 at 9:32:24 AM
Edited on: Mon, Jul 11, 2011 at 9:59:34 AM
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Quote by: Holtz, Lou
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Thanks for spending your free time on this cadman, it is greatly appreciated. Now with that said the perfectionist i kinda am this is not good enough. The transitions are not very smooth and yes i know you could break it down alot more to get it smoother. Also I dont think I said anything about family editor (might have been someone else). I just wanna know the best way to make this and how to do it.
Again thank you for this!
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Yes, it was Pchan who stated family editor. sorry my mind goes in order of last read.
Yes to smooth it out you have to add more elipses and do it in the Conceptual Mass enviroment, it all depends on how much time you want to spend on it. (I don't have that time, I only wanted to share the technique)
I hope this has heped get you started.
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Quote by: Holtz, Lou
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i also gave this a shot last Friday, but revitcity was down, so I couldn't upload.
This is a total of two swept blends, mirrored once each.
I first attempted horizontal sweeps, in quadrants, and while that was 100% geometrically accurate, Having swept blends with an ellipse in the profile and an ellipse as the path seemed to be a bit tweaky, and I kept getting unspecified errors about not being able to create. So I went with vertical swept blends
Edited on: Mon, Jul 11, 2011 at 1:01:15 PM
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alterego, why would you use an elipse for the path, I just used a straight vertical line between each elipse as my path, no problems at all.
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Quote by: Holtz, Lou
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alterego,
Is it possible you can upload your family to look at.
It seems like with your method, this might be a better approach and less time consuming/tedious.
thanks in advance!
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Oh... I had attached the family file. Odd. But I've used the correct outside surface as the path, (the front back elevation profile taken from CAD) and the profiles are the left-right elevations' ellipse as the profile for the swept blend. If that makes sense.
I COULD get perfect accuracy with this method if: the profiles at the top and base are the same *proportion* of the base and top ellipses.
Currently they're slightly off, if you look a the model the 4 planes aren't quite seamless. Because revit was giving me errors, so it was trial and error to get profiles that revit would accept to create the swept blend.
Edited on: Mon, Jul 11, 2011 at 2:12:15 PM
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94700_entry_sign.dwg
94703_SWPBLEND.rfa
