surface error message help

Discussion created by Guest on Jul 12, 2006
Latest reply on Aug 31, 2007 by Nick Zotov

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I am not sure why you cannot define a direction without seeing the actual file. Can you send it? As far as loft and sweep loft is available (4th icon down on your surfacing toolbar). Sweep requires 2 different sketches to work.

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Guest Jul 12, 2006 3:29 PM
Mike,
Thank you very much for your reply. I know that I must specify a direction, but I am unable to. How do I do this. I know the box is pink, whereas in a 2d sketch that works, it is white. Secondly, why in the case of sweep and loft, is it that I do not even get the option to sweep or loft. in the pic you can see that the icons are greyed out.
gdea
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Guest Jul 12, 2006 3:29 PM
What SWKS is telling you is that you need to specify a direction when you are extruding a 3D sketch. By view your 1st JPG you post I can see you have not given a direction. When you select a sketch to extrude SWKS can tell if it is a 2D or 3D sketch. If it is a 3D sketch you need to tell SWKS which way to extrude. If you look in the Feature Manager of Surface Extrude in the Direction 1 box under where it say s Blind there is a selection box. ( It is pink in your JPG) This box is to define a direction. A direction can be a plane, body or line.

I hope this helps.
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- Nick Zotov @ Guest on Aug 31, 2007 5:13 PM
  
  Originally posted by: Mike Murphy * What SWKS istelling you is that you need to specify a direction when you areextruding a 3D sketch. By view your 1st JPG you post I can see youhave not given a direction. When you select a sketch to extrudeSWKS can tell if it is a 2D or 3D sketch. If it is a 3D sketch youneed to tell SWKS which way to extrude. If you look in the FeatureManager of Surface Extrude in the Direction 1 box under where itsay s Blind there is a selection box. ( It is pink in your JPG)This box is to define a direction. A direction can be a plane, bodyor line. I hope this helps.
  
  Give that man a very large beer!
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Guest Jul 12, 2006 3:29 PM
Will someone please explain to a total newbie to surfaces why I would be unable to surface extrude some side walls on a simple 3-d sketch of a square, and yet I am able to on a 2-d sketch. This is the error I get using the 3-d sketch...
"the direction of extrusion must be specified for 3-d sketch" and yet I cannot change the direction
also why wouldn't I get the option to sweep or loft from a 3-d sketch. It is obvious that I am missing something fundamental here.
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Guest Jul 12, 2006 3:29 PM
The reason that you don't have to specify a direction vector in a 2D sketch is that Solidoworks defaults to using the normal vector of the plane(or face) the sketch was created on. Since a 3D sketch isn't constrained to a face, you have to specify either an existing flat surface or linear edge (sketch segments and planes will work)
For some reason that illudes me, you have to use a 2Dsketch as a sweep profile. You don't have this limitiation with lofting. Both surface and solid lofting are available. However, in order to specify that an individual segment of a 3D sketch is a loft section , you'll need to first RMB and select 'single contour select' and then you can pick one segment.
See attached.
CAD Naked
John
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surface error message help

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