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'[OT]: 2D CAD?'
2005\04\03@195907 by Marc Nicholas

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What are y'all using for 2 and 2.5D CAD? Ideally, I'd like something
free or very low cost....Linux or Windows. There are a few companies
with low-cost 2D .DWG compatible products, but I really need to know
it works okay before running physical prototypes...and this is
hobbyist so, no, I can't just buy AutoCAD :-)

-marc

2005\04\03@203520 by Hector Martin

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Marc Nicholas wrote:
> What are y'all using for 2 and 2.5D CAD? Ideally, I'd like something
> free or very low cost....Linux or Windows. There are a few companies
> with low-cost 2D .DWG compatible products, but I really need to know
> it works okay before running physical prototypes...and this is
> hobbyist so, no, I can't just buy AutoCAD :-)
>
> -marc

How about Qcad? Free and opensource, Linux and Windows. 2D. (if by
2.5D you mean drawing several views of an object, of course 2.5D too)

http://www.ribbonsoft.com/qcad.html

--
Hector Martin (spam_OUThectorTakeThisOuTspammarcansoft.com)
Public Key: http://www.marcansoft.com/hector.asc

2005\04\03@231015 by Matthew Miller

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Hello,

On Sun, Apr 03, 2005 at 07:59:07PM -0400, Marc Nicholas wrote:
> What are y'all using for 2 and 2.5D CAD? Ideally, I'd like something
> free or very low cost....Linux or Windows. There are a few companies
> with low-cost 2D .DWG compatible products, but I really need to know
> it works okay before running physical prototypes...and this is
> hobbyist so, no, I can't just buy AutoCAD :-)

Like the other poster, I recommend QCad as well. For Unix the program is
free, but the professional version is less than $30. The program is still
under development (like any program), but they get my input since I paid for
it gosh darn it!

The hardest part for me is that it isn't AutoCad. You can't do as much on
the command line as you can in AutoCad. While we are on this subject:
whoever thought VBScript should replace AutoLisp, kill'em.

Ok, rant mode off. QCad is good. It does have some limitations. (Notably, I
would like to get a postscript output that isn't just a bitmap.) Try the
program, it's cheap! But, be aware of the caveats.

Take care, Matthew.

--
The Two Commandments for the Molecular Age:
1. Thou shalt not alter the consciousness of thy fellow men.
2. Thou shalt not prevent thy fellow man from altering his or her own
  consciousness.
  -- Timothy Leary

2005\04\05@143112 by alan smith

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DesignCAD works well for me.

Or...look into the demo package for SOLIDWORKs



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2005\04\05@181845 by Bradley Ferguson

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On Apr 5, 2005 1:31 PM, alan smith <.....micro_eng2KILLspamspam@spam@yahoo.com> wrote:
> DesignCAD works well for me.
>
> Or...look into the demo package for SOLIDWORKs

Although I, myself, don't do much of any CAD work and have only done a
single tutorial of SolidWorks, I've read online (and heard bitching
next door) that SolidWorks is a poor choice for 2D designs.  It does
3D designs quite well with the emphasis on reusing parts, but that the
2D output functionality is limited.  I've read of some people using
AutoCAD to fixup the output before passing it on to the machine shop.
On the other hand, people still get a lot done with it.

For the CAD that I do, on occasion, do, I use use Ashlar-Vellum
Graphite and find that it gets the job done for me and many others.
It is also a bit cheaper than some of the other CAD packages.

Bradley

2005\04\05@183259 by Padu

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I'm also looking for some CAD tool (2D and 3D) for free. I'm going to
investigate this solidworks.

Meanwhile, suppose I'm already a CAD whiz, and then I've designed my
RC-sized mobile robot chassis (including the protective shell) and I want to
create that part using plastic or fiberglass. The robot may tip over, so I
need something to protect the internals against shock and dirt (it is
intended to off-road).

How can I (a mere hobbist) can transfer a CAD part to a physical world thing
using the materials described above?

2005\04\05@191230 by Marc Nicholas

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For inexpensive acrylic parts, try:

http://www.pololu.com

-marc

On Tue, 5 Apr 2005, Padu wrote:

{Quote hidden}

> -

2005\04\05@192036 by Bradley Ferguson

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On Apr 5, 2005 5:32 PM, Padu <padupicspamKILLspammerlotti.com> wrote:
> I'm also looking for some CAD tool (2D and 3D) for free. I'm going to
> investigate this solidworks.
>
> Meanwhile, suppose I'm already a CAD whiz, and then I've designed my
> RC-sized mobile robot chassis (including the protective shell) and I want to
> create that part using plastic or fiberglass. The robot may tip over, so I
> need something to protect the internals against shock and dirt (it is
> intended to off-road).
>
> How can I (a mere hobbist) can transfer a CAD part to a physical world thing
> using the materials described above?

For that, you might try: http://www.emachineshop.com/
I've not used the service, but if you check online, you'll find others
that have.  I'm sure it's been discussed on the PicList as well.

If you want something molded, that's going to be more expensive
because they have to develop tooling to mold the plastic or fiberglass
around.

Supposedly, you can also just call machine shops (in your yellow
pages) and see if they would be interested in doing a small job and
how much, etc.  You'd want to already have a drawing done before you
call as they'll most likely want that faxed over if they are at all
interested in small jobs.

Bradley

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