Randolph Posted May 13, 2014 Share Posted May 13, 2014 In architecture, quite often I need to shape surfaces between skew lines (i.e. hyperbolic paraboloids) using the LOFT command. To make these surfaces 3D Solids, I use the THICKEN command to give them thickness. The problem is, that the thickness is applied in normal direction to the surface. Does anybody know how to give lofted surfaces a thickness along the Z vector, so that the side faces are vertical? Thanks! Quote Link to comment Share on other sites More sharing options...
JD Mather Posted May 13, 2014 Share Posted May 13, 2014 You could Extrude and then Slice with Surface. Attach your file here if you can't figure it out. Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 13, 2014 Author Share Posted May 13, 2014 Hi JD, point is, you can slice where the thickness protrudes, but you can't where it goes in from the covering surface. Thicken Problem.dwg Quote Link to comment Share on other sites More sharing options...
JD Mather Posted May 13, 2014 Share Posted May 13, 2014 Can you offset the surface and Slice from both sides? Slice.zip ops, check this one Slice_Rev1.zip Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 13, 2014 Author Share Posted May 13, 2014 (edited) That does not compute to me earthling, dear Luminous Being. How can I offset a surface? And what do I do with the sat-file? Appload-it? Thanx for stepping down. Point is, I cannot just offset the confining lines, for the result would be a different hyperbolic paraboloid. What I could do would be to construct new constrains further ouside, which would mean dire work. Ah - sat is an Inventor file I see. I'm talking AUtoCAD. Edited May 13, 2014 by Randolph Quote Link to comment Share on other sites More sharing options...
JD Mather Posted May 13, 2014 Share Posted May 13, 2014 Sat is a neutral format file. https://en.wikipedia.org/wiki/ACIS Open AutoCAD run the acisin command to import the *.sat file. Once the design intent is understood, at technique appropriate for AutoCAD can be devised. Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 13, 2014 Author Share Posted May 13, 2014 Ah, OK, that was new to me. And your drawing shows exactly what I mean. Now I just need to know how you did it ... I mean in a manner that the originating 2 lines are really elements of the resulting top surface of the 3D solid. Thank you for your patience with me. Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 13, 2014 Author Share Posted May 13, 2014 In the attached sketch, you will find your thickened surface again. Let's see it as a simplified glass roof connecting two buildings. I made two such simplified buildings. You can see them with the roof in between and a copy of buildings without roof. The question is: How do I create the glass roof, if only the two buildings are given? Because this is the situation you will be in as an architect. Design Intent.dwg Quote Link to comment Share on other sites More sharing options...
JD Mather Posted May 13, 2014 Share Posted May 13, 2014 Is that one twisted sheet of glass or will there be framework of some sort with many panes of glass inserted into the framework? If many panes of glass - are the individual sheets twisted or planar? Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 14, 2014 Author Share Posted May 14, 2014 Please don't take the picture too far - it's a geometric problem in the end. You can see it as a concrete structure or a piece of twisted asphalt asd well, - anything that will connect 2 skew lines and has a thickness. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted May 14, 2014 Share Posted May 14, 2014 Create the initial surface. Copy it at desired distance. Close up the sides. Surfsculpt or some other AutoCAD technique like two Slices. Quote Link to comment Share on other sites More sharing options...
Randolph Posted May 14, 2014 Author Share Posted May 14, 2014 Thanks a lot - the SURFSCULPT command did the trick. I didn't know this command so far. But what do you mean by "two Slices"? Do you mean the SLICE command? Quote Link to comment Share on other sites More sharing options...
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