Subject:
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Re: Beveled flex tubing
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 24 May 2011 15:09:28 GMT
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Viewed:
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18316 times
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In lugnet.cad, Philippe Hurbain wrote:
> In lugnet.cad, Ross Crawford wrote:
> > In lugnet.cad, Timothy Gould wrote:
> > > In lugnet.cad, Larry Pieniazek wrote:
> > > > Has anyone modeled a bit of flex tubing that has beveled ends? I think I know
> > > > what I need to do to model it but actually doing it may be beyond my patience,
> > > > (but maybe I'm using the wrong tool, working with quads in MLCad is a bit hard)
> > > >
> > > > Thanks.
> > >
> > > For anything with radial symmetry a little perl script is the right tool :)
> >
> > Or alternatively, you could use ring/cone/cyl primitives, should be lots easier
> > than doing individual quads.
>
> Larry, would you have a picture or drawing of what you need exactly?
>
> Philo
I was looking at trying to use your cutting tool, actually,.. stretch a
4-4cyli.dat to a long enough length (somehow?) and then just use a big quad
tilted to 45 degrees as the "blade". But I can't quite suss out how to do it,
being somewhat clueless at using it.
My other approach (which I'm working on now) is to take a ring's worth of
primitive, stretch it to the right elliptical size, then tilt it, then use the
ring's vertex values to stretch the quads that make up a cylinder to intersect
it. I can get the ring or cylinder stretched by manipulating its rotation matrix
as an embedded part, but then I don't have the endpoints (unless I inlined it?)
If I use the primitives that make up the ring, I can tilt them but then it's not
stretched right so the intersections don't work
I don't have a picture or drawing of what I need, but it's simple to describe...
take a bit of flex tubing and slice one end off at an angle instead of
orthogonally, that gives the basic shape I want (in the model I would butt two
of these together as the tubing is sliced off on both ends). I'm using 60
degrees because that makes the math easier (the ellipse gets stretched to 2:1)
but in real life the cuts I made are more like 45 degrees.
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Message has 1 Reply:
 | | Re: Beveled flex tubing
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| OK, I think what you miss is the 4-4cyls.dat primitive, add it to a regular 4-4cyli and you basically have what you need. For the tip, you need a slanted primitive (ring and edges). There is a tutorial (unfortunately in French) here (URL) , (...) (13 years ago, 24-May-11, to lugnet.cad)
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