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Author Topic: 3D reducing pipe on an arc  (Read 8687 times)

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Barry Clark

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3D reducing pipe on an arc
« on: January 13, 2006, 08:53:29 AM »
What I am trying to accomplish is to draw a 3D reducing 90 degree ell. It would start at 6" and end at 3" and reduce gradually and evenly along an arc. Any thoughts on how to accomplish this?
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Jürg Menzi

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  • Oberegg, Switzerland
Re: 3D reducing pipe on an arc
« Reply #1 on: January 13, 2006, 09:09:06 AM »
Hi Barry

Do you mean something like this?

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Barry Clark

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Re: 3D reducing pipe on an arc
« Reply #2 on: January 13, 2006, 09:15:03 AM »
Exactly!

How did you accomplish this and is it a solid?
« Last Edit: January 13, 2006, 09:24:38 AM by Barry Clark »
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Jürg Menzi

  • Swamp Rat
  • Posts: 599
  • Oberegg, Switzerland
Re: 3D reducing pipe on an arc
« Reply #3 on: January 13, 2006, 09:29:51 AM »
- Draw a 90° arc
- Draw a circle with the larger Ø on the desired arc endpoint
- 3D rotate the circle 90°
- Calculate the taper angle by length of the arc, small and large radius
- Extrude, option path, option taper angle

That's it... :-D
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A computer's human touch is its unscrupulousness!
MENZI ENGINEERING GmbH
Current A2k16... A2k24 - Start R2.18

Barry Clark

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Re: 3D reducing pipe on an arc
« Reply #4 on: January 13, 2006, 09:42:37 AM »
 :oops: OK. I feel just a touch stupid.  :-D I have always whipped through the extrusion process so quickly that I never noticed the taper option. geez. Thanks!  :-)
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Jürg Menzi

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  • Oberegg, Switzerland
Re: 3D reducing pipe on an arc
« Reply #5 on: January 13, 2006, 09:46:28 AM »
Glad to help... nobody is perfect... :angel:
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A computer's human touch is its unscrupulousness!
MENZI ENGINEERING GmbH
Current A2k16... A2k24 - Start R2.18

Barry Clark

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Re: 3D reducing pipe on an arc
« Reply #6 on: January 17, 2006, 08:08:48 AM »
Yeah, but I would like to lay claim to the obvious things. haha.  :-D
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t-bear

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Re: 3D reducing pipe on an arc
« Reply #7 on: January 19, 2006, 08:12:15 AM »
Now THAT is slick!!  Thanks Jurg, for that one.  Haven't had a call for a reducing ell yet, but I got this in my "toolbox" now.
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ChrisSolid

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Re: 3D reducing pipe on an arc
« Reply #8 on: January 19, 2006, 10:23:03 AM »
Quote from: Barry Clark on January 13, 2006, 09:42:37 AM
:oops: OK. I feel just a touch stupid.  :-D I have always whipped through the extrusion process so quickly that I never noticed the taper option. geez. Thanks!  :-)

Don't feel bad. If I'm not mistaken, I believe AutoCAD has only been able to do a tapered extrusion along a path since R2004. Before that, you could do a tapered extrusion, but only along a straight vector, not along a path, and it's possible you were sort of sub conscienciously remembering that limitation.
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Barry Clark

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Re: 3D reducing pipe on an arc
« Reply #9 on: January 20, 2006, 07:37:46 AM »
You see. That is what I originally thought. I hope that is right. haha. As often as I use that command, I really hope that is right. haha.
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