Re: [CAD_CAM_EDM_DRO] Re: Vectorcam, bobcad, rhino3D, which one??

How easy is it to draw rotors with profiled blades that must be cut on a
fourth axis in Rhino3D etc? It's obviously got a lot to do with skill in
using the program but is it approaching impossible or pretty simple?

John. H

----- Original Message -----
From: "tauseef" <alieron@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, May 28, 2001 7:59 AM
Subject: [CAD_CAM_EDM_DRO] Re: Vectorcam, bobcad, rhino3D, which one??


> Hi Mike,
> thanks! Rhino does seem straight forward and it looks nice too, an
> added benifit. What CAM package do you use to convert the drawing you
> make in Rhino3D. I am tring out the demo right now. I am a full time
> optometry student so the $195 price tag is really inviting right now!
> I can wait a bit as I will be a student for one more year but am
> leaning toward Rhino for my 2.5 and 3D drawings already. TurboCAD 3D
> is another option (I guess).
> thanks
> tauseef
>
> --- In CAD_CAM_EDM_DRO@y..., "Mike Phillips" <mikep_95133@y...> wrote:
> > I've used Rhino for a few months now. It's Excellent!
> >
> > Mike
> >
> > --- In CAD_CAM_EDM_DRO@y..., "tauseef" <alieron@h...> wrote:
> > > Hey guys (John, Tom, and Paolo + any others),
> > > I am so sorry that I did not respond to your letters before! I
> was
> > > just doing a search on these CAD/CAM packages again and ran
> across
> > > these posts!! Sorry! To answer your question of what I plan to
> make
> > I
> > > would say things like 3D name plates, parts for my radio control
> > > helicopters, car and planes (these would really be more 2 1/2D),
> > some
> > > jewelery, possibly "artwork," business card holder for my
> brothers
> > > and sisters and other silly things like that. Answering that
> > question
> > > is really pretty hard (even though I know its very important). I
> > love
> > > this machining stuff and the 3D CAD/CAM package would really be
> more
> > > of a luxuary as I don't know how much 3Ding I truely would be do
> > > considering the time involved in drawing out a 3D object.
> Machining
> > > is also a hobby for me and not my profession so I don't need the
> > real
> > > high-end stuff. I downloaded Rhino3D today and must say for the
> 30
> > > min I have spent on it, I am impressed! Its seems very straight
> > > forward. I also have the demo of vectorcam but find it quite hard
> to
> > > work with. Millwizard is also very impressive and I can't even
> > > imagine how wonderful the higher end CAM packages must be! Would
> a
> > > combination of TurboCAD and Millwizard be a consideration?
> > > thank you guys again for your input and I hope to answer much
> > quicker
> > > next time :)
> > > tauseef
> > >
> > > --- In CAD_CAM_EDM_DRO@y..., machines@n... wrote:
> > > > --- In CAD_CAM_EDM_DRO@y..., pavel59@y... wrote:
> > > > > John, I don't want to enter the dispute about the stand alone
> > CAM
> > > > > packages, I agree, there're a few of them and the majority of
> > > them
> > > > > are very expensive.
> > > > > But about the 3D side, I want to make one thing clear: CAD
> > > doesn't
> > > > > necessairly mean 3D and viceversa. Drawing exchange doesn't
> mean
> > > > > surface exchange and so far.
> > > > >
> > > > > C.A.D. means Computer Aided Design (Drafting), usually
> > mechanical
> > > > or
> > > > > architectural drawing, modeling and detailing
> > > > > A more recent definition like C.A.S. (Computer Aided Styling)
> > and
> > > > > C.A.I.(D). (computer Aided Industrial Design) label those
> > > > > applications - like Rhino, Alias Studio, SolidThinking, Form-
> Z
> > > and
> > > > > few others - which are specialized in 3D modeling. These
> > > softwares
> > > > > usually support specialized features for advanced surface
> > > modeling
> > > > > and evaluating which are not available on general purpose or
> > > > > mechanical CADs.
> > > > >
> > > > > Some other high-end applications like ICEM and Imageware
> > Surfacer
> > > > are
> > > > > also used in the automotive industry for C.A.S. but they
> > actually
> > > > are
> > > > > Reverse Engineering applications.
> > > > >
> > > > > Rhino isn't a CAD package (ask McNeel if they would consider
> it
> > a
> > > s
> > > > a
> > > > > CAD), it's a 3D surface modeler (with oustanding capabilities
> at
> > > a
> > > > > very low price).
> > > > >
> > > > > DXF isn't a format you would rely for exchanging consistent
> 3D
> > > > > surfaces, IGES, STEP and other more exotic formats are better
> > > > suited
> > > > > for this.
> > > > >
> > > > > If I was Mr. Tauseef and I had no access to the packages I
> > > actually
> > > > > have, but - at the same time - I really needed serious 3D
> work,
> > I
> > > > > would consider a professional package like Rhino and would
> look
> > > > > around me for a CAM able to read any IGES, STEP or even a STL
> > > file.
> > > > >
> > > > > I remember a japanese site with lot of impressive examples of
> > > jobs
> > > > > done that way on small personal CNC mills, modeled in Rhino
> > > > (mostly)
> > > > > and processed into some inexpensive CAM software.
> > > > >
> > > > > In 3D, the quality of the source is the most important step:
> if
> > > you
> > > > > don't have a reliable surface to work, it doesn't matter
> which
> > > CAM
> > > > > package will process it.
> > > > > STL exchange format could be a good compromise, it gives you
> the
> > > > > choice for resolution/speed/time/precision you can afford and
> > let
> > > > you
> > > > > use one of the affordable packages available today. Don't
> forget
> > -
> > >
> > > > it
> > > > > has been developed for the high precision Stereolitography
> > > > > prototyping process.
> > > > >
> > > > > Finally, about those specific CNC operations and cycles you
> > > > > mentioned, I suppose you could machine your free-form
> surfaces
> > > the
> > > > > way I suggested and then, import those mechanical features
> into
> > > > > another apllication which better handles them.
> > > > > I feel this is a quite common procedure (at least I could see
> it
> > > > > being applied several times in professional machining).
> > > > >
> > > > > I hope my words are understandable, this isn't my first
> language
> > > > and
> > > > > I apologize for the mistakes.
> > > > >
> > > > > Paolo Velcich
> > > > > industrial designer
> > > >
> > > > Paolo,
> > > > Thank you for the reply and I had no trouble understanding it.
> > Your
> > > > english is 10,000 times beter than my Italian?
> > > > You are not entering into a dispute at all, that's what
> discussion
> > > > groups are for. I've left your post virtually intact and I'll
> try
> > > to
> > > > cover the replies in order.
> > > > Firstly though I don't want to appear to be knocking Rhino I am
> > > only
> > > > trying to give general answers.
> > > > I was lead to believe that DXF files can give 3D information
> > hence
> > > > the DXF3D tag on some file names, Millwizard is one I believe.
> > > > Obviously not all prgrams can ouput these files.
> > > > Your remarks about CAS, CAI[D] and ICEM whilst being very valid
> > are
> > > > really out of the scope of this list which is very hobby based.
> > > > The use of Rhino and a STL based cam system will give very good
> > > > results as you point out but this combination will then deplete
> Mr
> > > > Tauseef's funds leaving him nothing left to buy another package
> to
> > > > handle the other milling cycles, most of which will cost the
> same
> > > as
> > > > his initial purchase. So instead of paying $800 which I think
> was
> > > the
> > > > mentioned figure he will finish up paying twice that for four
> > > > programs, duplicating in cases what he needs.
> > > > You mention that in professional machining this is done but
> I've
> > > als
> > > > seen where a company has paid $15,000 for a CAD/CAM package,
> > > realised
> > > > that it doesn't suit them and are looking for another one.
> > > > I don't think anyone on this list falls within this scope.
> > > > We are all stabbing in the dark because Mr Tauseef laid down a
> > very
> > > > open ended question. Until we get clarification on his proposed
> > > uses
> > > > we will be split between those offering Rhino / STL Works /
> > > > Millwizard / Rams/ Ampari and what I call full blown 3D CAD/CAM
> > > >
> > > > Come on Tauseef we are fighting on your behalf and you aren't
> > > holding
> > > > your end up <BG>
> > > >
> > > > John Stevenson
> > > > Nottingham, England.
>
>
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