AutoCad 3D :: Creating A Knot-like Object
Apr 4, 2013
I'm an architecture student, trying to complicate my life a little bit more than required. I'm trying to make the next object in AutoCAD so I could "analyze" the form and its shadows with descriptive geometry later:
I'm pretty new to AutoCAD (I have the 2012 version) but I'm familiar with all the basic stuff since I've had some experience with SolidWorks. What I tried so far was to create a cube as a frame for my spline and then sweeping it with a rectangular shape.
I've been having trouble with the constraints in the intersecting points. I can't figure out the exact shape from the start and it makes it hard for me to play with the form later. I'm also having trouble to actually make it look like a knot.
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Jan 23, 2012
why can't I snap to a knot on a spline when trying to use a dimensional constraint? I can snap any other geometric feature like a line or a dimension string to a knot. I can grab the knot (also seems to be in the same place as the "fit point", yes?) and move it around, so why, why, WHY can't I use a dimensional constraint? I really need to be able to control a spline's fit points with dimensional constraints, but I can't get at them exept to manually move them around.
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Oct 12, 2005
I saw an image of a cigarette with a knot in the middle. How can I do that?
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Jul 23, 2012
i have this shape that i can make through a series of of lofts. I would like to be able to create it using one command but i am stumped.
3D corner.dwg
I have tried using the guides command on the spline but it does not like it as I assumed it would not.
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Jul 10, 2012
I have a network of 3d polylines, how can I convert this to a 3d object? In 3ds max I can use a surface modifier to convert it to 3D. Is there a workflow inside of AutoCAD?
3d polyline network.jpg
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Dec 12, 2013
I am creating flat patterns of sheet metal parts and i would like cad to do some calculations for me.
For example when i am creating an object , be it a rectangle or simply a line , i dont want to have to work out my sizes on the calculator then input the size to create the object. I would like cad to do the sum for me by inputting my sum straight into the dimension of the object i am creating. E.g CLick rectangle, select a start point and type 1200-375+37+37+10+10, Then tabbing to do a similar thing for the width
The way i draw flat patterns is to start with the overall size then chop into that shape to create a finished pattern. I also have used Inventor and a software for cnc punching called Cadman. Both of these programs you can do this and what with Inventor also being a creation of autodesk i would have thought this could be done in cad as well.
Is there an add on or a simple command that will let me do this.
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Oct 6, 2011
I am currently working on a playground development for a school project where we have to build a 3D playground based off of autocad drawing, modles, etc.Below is a picture of a "crab see-saw" that I have in my park, and I am having trouble making it 3D. I have tried using "extrude", but, while it streches the drawing into 3D, only the crab's claws become a solid object. The crab's body remains "open".
Crab.jpg -> Normal Drawing
crab2.jpg -> Extruded Drawing
The steps I take to extude it are:
1. Select extrude command
2. Select entire drawing
3. Click top of crab body for designated height
4. Type in 7 (units) as the strech command
5. Press enter
All the lines for the crab body are connecterd and I just can't figure out why it isn't working.
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Aug 31, 2012
I have the 3d model of a ship, but it has no surfaces or solids, just lines. I want to create some solids based on those lines.
It's better if i attach the dwg to the post and explain what i want to do:
- in the file attached there are some lines marked with red and blue
- i want to create a solid/3dobject by extruding/lofting the red lines along the blue lines.
In the drawing only a few lines are colored, for better understanding. I tried with loft, but it only creates some surfaces. The point is that i need a solid or a 3d object.
sampla.dwg
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Nov 2, 2012
I have a problem when i create an alignment with Select Object. The Chainage is not coming properly.
And here i attached the Print screen.
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Sep 25, 2012
I am trying to create a Mtext object with an annotative TextStyle. I make the textstyle current (which I don't know if is exactly the same as changing the TextStyleId of the mtext object) and create the MText. The problem which I encounter is that the newly crated MText Object has textheight as the textstyle's paper space text height, instead of scaling the text height by the annotative scale, as when you create the Mtext using Autocad menu.
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Dec 11, 2013
When I create a pdf of a shaded 3D object the pdf shows up with pixelated edges. Is there a way to create a pdf of a shaded 3D object with smooth edges as it appears on screen?
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Aug 6, 2013
How to go about creating a surface, region or 3D object using non-coplanar points? I'm drawing a few different 3D models for an artist friend of mine to use in her proposal on a local public art project.
However for this version I am bottlenecking on how to create these regions. I have vertical(ish) beams of varying height twisting in different directions with sheets of alternating metals welded in-between, the bottoms line up straight with the tops following an S curve but with the twisting geometry the top two endpoints for each will always be in separate planes.
PublicArtModel.dwg
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Nov 12, 2013
I am creating a line using entmake, but I need the start and end point to be variable that was already defined ex.
(entmake '((0 . "LINE")(8 . "FIELD") (10 . line_insert) (11 line_end)))
Command: !line_insert
(29.2813 20.5 0.0)
Command: !line_end
(29.2813 18.5 0.0)
The error I get is
; error: bad DXF group: (10 LINE_INSERT)
What do I do to make it recognize this variable?
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Jul 5, 2009
I have been trying to figure out how to create text within another object that blends in with the background (behind that object).
If you notice the "two plus three equals" portion on the top left of the 5 blends in with the color of the shirt (so if the shirt was red or blue, the "two plus three equals" would show up as red or blue instead of yellow). How do you do this in photoshop? I've been trying to find a tutorial on this for a while, but to no avail.
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Aug 24, 2011
Is there a way to select either vertices on a polygon or points on a curve and create an object at those points?
The snapping of objects to curve points isn't very accurate, so if possible, the above would greatly speed up my workflow.
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Aug 23, 2012
Is there an easy way to copy a line of vertices and have it create new faces on the same object?
I have a rectangle, viewing from the side, that I have already modified extensively. I simply need to create additional vertices / faces along the length of the rectangle.
• Intel i7-975 - 3.33 GHZ
• 24 GB RAM
• Samsung 256 GB - SSD
• NVIDIA GTX 295
• 3ds Max 2013
• Windows 7 - 64 bit
• SpaceMouse Pro
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Mar 14, 2013
I am trying to apply multiple gradients to a leaf, or to any other object for that matter. Along the protruding edges I would like to apply a short gradient that points inward. I would like to repeat this gradient to every protruded edge, but each gradient would have to be manipulated independently. I have tried to do this using the Appearance Panel, by duplicating the fill. This works just fine but because the gradients are on different layers I can only see one gradient at a time, no way to see them all together.
The pic below is just an example, the colors/design are irrelevent.
When I try to move the gradient itself it seems to always jump back to where I picked it up, I can't place it exactly where I would like. As well, how can I control the wide of the gradient? As you can see in the pic, the protruding edges are quite narrow so the gradient should cover just that portion of the leaf.
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Sep 19, 2013
I am starting to sell online and i would like to be able to cut out the images on photos so they have a completely white background.
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Sep 10, 2013
This is something that I could do very easy with PS, just CTRL + click in the layer and the object get a selection around it. How I can create a selection for an "floating" object? Sometimes I need to remove some pixels around the object I cant find a way to select the contour of the object again.
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Aug 8, 2011
create a face on my existing object. Is there a way to select the edges and have them merge together, thus creating a face?
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May 8, 2013
If I already have an object selected and then click the "new layer" icon in the layers palette, the object I have selected deselects as soon as the new layer is created. Why is this? Also, it only happens on one of my computers, so I figured it was a setting that I'm missing but I certainly can't find it.
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Sep 18, 2013
I'm working on an illustration of headphones and I need to make it look as thought the wire coming out of the headphones is sitting on a table and the light source is above and casting the shadow slightly to the left.I did the below test but it looks more like you are looking at the wire from an x/y axis.
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Aug 20, 2013
I was trying to create a clipping mask from an object that is made from two shapes, and one has appearances but I had to resort to expand appearance, then use the object as a clipping mask.
Is there really no way to keep the dynamic appearances and use a layer as a clipping mask?
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Oct 16, 2013
I would like to create a simple polyplane in the side view in Maya. When I try to do this nothing happens and the software suggests I start on the grid but you cannot see the grid in the side view.
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Jul 26, 2011
I'm creating a simple pink eraser by creating the outline with a spline to get the basic shape then extruded it. Now the edges are square/sharp. How do you get a radius on the sharp edges? I applied an "Edit Poly" modifier but it only allows for an edge chamfer and I need a smooth radius.
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Mar 19, 2014
I'm trying to create a distressed look on an object that has a gradient mesh appliet to it. i've done this with regular objects but never on one with a gradient mesh. one of the steps in this process is to expand the object, but i'm not able to do so because the expand option is grayed out in the drop down menu.
normally after expanding the object i would use one of the artistic charcoal brushes to create a texture over the object in a different color. then i would select the brush strokes and expand apperance. then, using the pathfinder, i would merge the expanded brush strokes with the expanded object and then delete the brush stokes. what remains is the object with little cut-outs where the texture of the brush strokes used to be.
however i can't do this because i can't expand the object with a gradient mesh.
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Jul 25, 2013
I'm trying to rebuild a logo in CorelDraw, and I'm having troubles with it creating a hole when the object is folded over itself.
The curve is closed, and it's one object that loops around like a figure 8. I've attached a photo for you to see what I mean. The top is the original logo, and the bottom is what's happening when I try to fountain fill the curve. How can I layer an object over itself without it doing that?
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Dec 16, 2012
I have keyframed some ojects. I then set up a camera projection texture at keyframe 179
Is it possible to create a Texture Reference Object from keyframe 179 so this texture will stick to the geometry throughout the sequence?
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Jul 21, 2013
When I click and drag with the direct selection tool, I'm getting a drag on the object rather than a marque for selecting points. As soon as I click, the tool switches to the black arrow tool. Did I mess up a setting somewhere? I'm not using any modifier keys.
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Aug 29, 2011
I have a rather simple 3rd party custom object... I tried to get its bounding box but the coordinates that come back don't seem to relate at all to the object.
What I'd like are the coordinates of two nodes the object contains...
Is it possible to apply the autocad cursor in some why with the node object snap to get their coordinates?
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May 2, 2012
I've already started using the AutoCad 3D.
how to put a 3D object on top of the another 3D object in autocad"! E.g.,I want to put a 3d object of one leaf (raised 1") on top of the vase, so that the edges of the leaf are placed completely on the surface of the vase.
I extruded the leaf 1" first, then tried to copy it on a solid cylinder of a vase, but it didn't work!!! It seems to be simple, maybe not!
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