AutoCAD 2013 :: Self-Intersecting Curves For Extrusion
Oct 31, 2013
I have been working on this project for awhile, trying to get it to extrude. The top drawing of the shape is when I created it, still as lines and arcs. The bottom pices are what I have broken it into and joined as polylines for extrusion. The top most piece of these is the one I have been working with, with no solution found. The 3 smallest of these pieces do extrude, but I need all of them to extrude as they are all different heights.
Once this extrusion problem is solved, the rest is just unioning it together and to the rest of my project. I have tried exploding them, overkilling them and joining them again, I have tried the boundary method I have found on forums, nothing is working. I have gone through with a fine tooth comb on the top most section and made sure there wasn't anything extra. I have tried using pedit on it, and many of the commands say you can't do this on a closed polyline. If its a closed polyline, why won't it extrude? I could find anywhere where it was "Self intersecting curves" like the error says when I try to extrude it.
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Aug 2, 2012
am used to using autocad 2010, i am using 2013 now and i cant figure out how negative extrude so to speak, if i extrude too far, how do i remove the end of the extrusion?
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Mar 1, 2013
I would like to create an effect similar to punching/stamping something in wet sand. Picture this... you have a punch/stamp and it says "Hello". You punch it into the wet sand at the beach and it keeps the form of the punch/stamp. You can see the interior angles/shapes, but not the exterior as it is part of the rest of the beach I want to be able to create that effect in a graphic/drawing.
If you want to look at it another way:
Say you have a glass. You also have a hole in the table to hold the glass. Once in the hole, you see only the very top of it and the inside of the glass... but that which is below the table is not seen. If looked at from above, you can see the interior that is below the table, but not the exterior.
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Nov 12, 2013
Acad 2013 on a capable Windows 7 machine.
I would like to cut a section through an extrusion. Attached find a section view of my extrusion cut at 90%%d. My deal is I want to be able to specify the angle. It could be anything, and it could be a compound miter (using in saw-speak, because my drawings go to saw operators), that is, angles in two directions. But, let's keep it simple - how to cut a section parallel with the Y axis in the attached drawing?
Right now I am warping something in due to the complexity of the profile. But for accuracy sake it is obvious why I'd like something better. I'd like my operators to have confidence in what they see.
I could do this easily in Inventor. Or even oin Civil 3D, working around it (using Autodesk-speak). But, I have neither. Is this a UCS thing? I trained myself to never touch the UCS long ago, because I am a surveyor by trade, and surveyors pull coordinates from AutoCAD (or one of its children) to stake points on the ground with, and a surveyor ends up working at McD's if she/he goes outside with coords pulled from a made-up UCS. So I don't know the first thing about manipulating the UCS, despite daily use of the products since release 12.
I looked at Sections in the 3D modeling workspace palettes, but nothing really jumped out at me for being able to rotate or cut sections where I want them to be. They all seem to snap to existing planes of the extruded solid. Big deal - I can do that intuitively just by looking at the part.
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Sep 28, 2012
Press/pull has been working fine up until now. When I try to press/pull a boundary, it creates an invisible extrusion rather than cutting into the object.
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Feb 23, 2013
I am preparing a batch of images for test submission, for a stock photo library.Recently a person working for one of the visual effects studios in London happened to tell me that these strict agencies use some set of layers that can separate tonality and color values to check for banding, dirtiness, noise and all those technical flaws that the human eye can't notice on a monitor.He said they perhaps have an action for it so that they can review faster.
He said that it is known as 'Craze Curves' or 'Visibility Curves' technique.He further added that all the studios use it before giving the final files to clients so that there is no issue in printing afterwards.It is sort of a quality control check and has been used by digital and advertising agencies all over the world.
But now his email seems to have changed and I can't get in touch with him to know how to use the technique.
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Jun 8, 2012
How do I project the Proposed Road Level information from Road_1 at the intersection of Road_2 (Alignment_GA.jpg) onto the Start of the Profile for Road_2 (Alignment_Profile.jpg) to give me my tie in start point?
How do I obtain the exact change of the intersection Point? How can i extend Road_2 onto the horizontal curve of Road_1 so i know they exactly intersect?
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Dec 12, 2011
I am trying to create a CAD drawing for the construction of Paddle Pop sticks. It is the basic shape of the Magnum sticks, but it is tricky because it has a 140 diameter taper, from the top of the jig to the bottom. I am trying to make the circle attached to the shape of the stick, and the Sweep the circle around the shape. But when I try to sweep it around, it says "The sweep results in a self-intersecting circle". I am using AutoCAD 2012.
P.S. I have attached the .dwg file so that it makes more sense.
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Apr 7, 2004
I am trying to modify a hoop instead of having a half circle, i half to cut the hoop short and add a flange, instead of starting over, is there a command I can use that I can create a flange and join the hoop and flange at the intersect..... the hoop was made using the fold feature...
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Jul 28, 2011
I am a beginner with AutoCad software, and I am currently using Civil 3D/Map 3D 2009.I imported a shp. file containing property information (owner, area, address, etc), and also imported an alignment row as a sdf. file. The row is a closed polygon.
My goal is to intersect these two types of data so that I end up with information on the number of properties affected by the row.
Is civil 3d 2009 capable of doing this? If so, how? I found a youtube video on using the 'Offset Alignment' command with Civil 3D 2010, however, is not the same for 2009.
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Apr 8, 2011
Im trying to write a routine in VB.net based on Fenton's examples from 'Zero to 3D in 60 Minutes'. the routine uses a filter set to select all 2D polylines in a document then a test is needed for each polyline to establish whether it is a loop, which can then be extruded into a solid or it is a non loop, where the operation will need to be an extruded surface, or if the polyline is a non-loop.
So far my code will pick up every 2D polyline and try and extrude it, but i need to catch the non-looped entities to handle them with an extrude surface method or if self-intersecting polylines, to either drop them and not cause an exception or process them in another way.
What entity attributes or methods should I use to perform testing to establish this loop and non-loop existance of the polylines to achieve this. I work with both C# and VB.net.
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Feb 7, 2013
is there a command or workflow to split all intersecting surfaces? currently we build surface models and split manually or open in autocad, explode, overkill, breakall, then export the lines for rebuilding in an FE package.
Ideally we would like to export straight from inventor with one hit i would like to do the 5 splits below the EOP marker automatically
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Feb 5, 2013
is there a command or workflow to split all intersecting surfaces? currently we build surface models and split manually or open in autocad, explode, overkill, breakall, then export the lines for rebuilding in an FE package.
we would like to export straight from inventor with one hit
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Apr 9, 2013
I have a rectangular chute, tapering in width and height, and intersecting, at an angle, with a round duct. I can't seem to find a way to determine the cut-out in the round duct.
Because the chute tapers projecting the size onto a flat plane to then project onto the round duct doesn't work.
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Jun 18, 2013
I have a main road corridor and a small access road corridor that intersects the main road. I don't want the intersection to have curb returns because I just want the access road to act as a driveway enterance (main road curb will run straight through and just get depressed at the access road enterance). However, I want the daylighting for the main corridor and the access road corridor to match up at this intersection and I'm not sure how to do this.
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Sep 16, 2011
Lets say you have a polyline snapped perpendicular to an acr and you start zooming in they tend to separate. In the past a simple regen would magically make them display as intersecting lines (no gap or overlap). Right now the regen isn't working and I can't figure out why or what changed. I tried changing the VIEWRES but that didn't seem to work. What else could it be? I don't even have to zoom in that far to notice the overlap.
Infrastructure Design Suite 2014
Civil 3D 2013 sp2
Windows 7 x 64, 16 GB
Intel Xeon @ 2.80 GHz
NVIDIA Quadro K2000
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Jan 7, 2014
I'm trying to find the intersecting points of a part that connects to the outside surface of a cylinder shaped part.
What is the best way to go about this? I have attached some images that hopefully illustrate my problem.
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Apr 27, 2012
I want to create a solid using VB and loft definition.
I creat each time different planes that have a constant distance in x dimension and a steady rotation each time φ (deg).
On each each plane i sketch the same profile and that is happened for 360 deg.
The problem is that Loft is not made because a line of the profile must follow a line tragectory and all other points must follow a circular tragectory. Also, there is a problem from 180 deg to 360 because there is intersection of profiles.
The result must be a solid similar to snail shell but all the same solid, as a cylindar whith a half sphere in the bottom.
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Oct 29, 2010
I need to trim a part that intersects with many other parts in several different sub-assemblies - on an angle.
**Attached is an image of my problem.
Split tool is disabled. It is only usable once I drill down into the assembly/part - it will not select the other cutting objects higher up the browser stack.They become ghosted.
What I need is a tool that projects intersection lines. Does Inventor have something like this? Standard projection lines on the part is not working because the cutting objects are not 90 degrees angled to the part to be cut.
This may be easy,.. I am just not seeing a way to do this with out a bunch of work-a-rounds.
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Jul 12, 2012
I wonder if there is a way to get an intersecting point coordinate of two polylines(lines) programmatically.
For example, like in the below sample picture, I need to get coordinates of the points in the red cycles.
Is there any method that I can easily use?
Could I get a sample code snippet that computes the coordinates? (in C# & ObjectARX 2010 if possible?)
I've looked up "Through the Interface" and this disscussion group. couldn't find any useful yet.
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Jan 3, 2013
Using Conceptual View, I have hanger plates that intersect an arch, and previously where they intersect you couldn't see inside the arch just the surface. Since saving as another drawing to add hangers details something has changed in the display and the arch appears transparent at the moment so you cant see where along the plates the arch intersects.
Unless you zoom right into the intersection, the surfaces appear and zoom out and it goes transparent again.
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Jul 26, 2012
I am looking to create a alignment label style within 2013 that allows me to create a label that looks somewhat like the following:
alignment 1
sta=xx+xx
alignment 2
sta=xx+xx
The label would be used at the intersection of 2 separate alignments.
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Mar 9, 2012
In regards to sweeping, what does the title of the post mean (self intersecting paths or loops are invalid for this operation). I have a 3D sketch consisting of 1 straight line, one spline with 4 points dictated by 'points' and an arc. All have tangential constrains to each other and I am looking to sweep a circle along this path to create a bent wire. I don't have anypictures or files as it is a stand alone computer at the moment.
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Aug 6, 2012
Attached shows lines (Parts) are intersecting each other in drafting mode. I have tried all but I am not able to resolve this issue.
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Apr 23, 2013
We build ASME chambers that have ports and tubes that intersect at various angles. When these tubes intersect at a standard angle, center on I have no problem creating the sheet metal layouts for the tubes. The attached PDF shows one intersecting at two differnet angles, off axis.
he sheet metal layout fo the tube part? I have modeled it pretty well, I just can't figure unfolding the tube portion. The head is a buy out item, we have that.
I have to ascertain two things ultimately, the hole size/layout (easy) and the tube (stumped).
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Oct 8, 2012
I am working on Sweeping three helix profiles around a cylinder to create a screw thread. When I sweep the profile, Inventor gives me the error messages:
"The attempted operation would create a self-intersecting surfaces. Try with different inputs".
or
"The attempted operation did not produce meaningful intersection edges from the face-face intersection. Try with different inputs".
However, this is exactly what I need to create the helix profile I require and eventually increase the size of the Extrusion Sweep profile to 80mm. When I increase the sweep profile to 80mm I get the same error message about the self intersecting surfaces.
I am working with Autodesk Inventor Professional 2011, 64bit, 8gb RAM, Windows 7, Intel Core i7-2860QM.
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May 1, 2012
I always get the message after I make a closed boundary polygon, and I know it's a closed boundary, but I know how to fix it. It just bugs me sometimes when the message pops up when I add it as a boundary under the definition of a surface.
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Dec 18, 2013
Is there a way for the program to automatically change profile elevations of intersecting roads.
Say for example i have two intersecting roads ROAD A and ROAD B.
On my ROAD A profile at station 0+300 i have a proposed road elevation of 9.5
On my ROAD B profile at station 0+000 (intersecting point) I have the same proposed road elevation of 9.5.
Now i change my ROAD A profile at station 0+300 to 10.3
Is there anyway to allow the program to automatically change my ROAD B profile elevations to 10.3
IF NOT--
and I have to use the Annotate > Add Labels > Profile View > .......................... labels,
Is there a way for those labels to link across the profiles such that , On my ROAD A profile at station 0+300 i put the label at the elevation of 9.5
On my ROAD B profile at station 0+000 (intersecting point) I have the same label at the elevation of 9.5
Now i change my ROAD A profile at station 0+300 to elevation of 10.3 then is there a way for it to automatically raise the ROAD B elevation label
So that I would know, without having to manually check through, that there is a discrepancy between those intersecting roads. So the real list of my query is whether I can link my alignments, profiles or annotation labels.
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Sep 11, 2012
I have recently starting using dimensions lines with overwritten text to label items (as it is a quick way to label multiple identical items).
What I'd like to add is a mark (like an architectural tick/oblique) each time the dimension line intersects one of the items.
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Oct 17, 2011
Essentially, I'll be creating a sort of Venn diagram. So for the purposes of this exercise, let's assume it's the classic Venn diagram of three intersecting circles. But I need this to work with closed polylines, that may also have arc segments in them.
Anyway, so I have these intersecting areas, and I need to create bounding polylines for each area, and assess the number of overlaps. So, as in a Venn diagram, the areas where only one circle is present can then get shaded one color, areas where two circles are overlapping can get a different color, and the area where all three circles overlap can get a third color.
I'm clearly going to have to be converting the various boundaries to Regions, and performing some Unions. It seems I could grab all objects, convert them to Regions 2 at a time, and compare their Union'ed area to their individual area, to determine if they overlapped at all. With only the 3 cirlces, that would work, but when I have 35 individual polyline areas with arcs, suddenly this method feels like it will break down.
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Feb 12, 2013
Run profile on a self-intersecting street? The one I'm dealing with is a dead end 'P' shape. Logically, there are manholes in the intersection of the 'P', and logically to me, these structures need to show up in two places in the same profile view. Of course, C3D doesn't realize that I want a certain structure to show up twice, and I'm not sure how to communicate that information to it.
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