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Re: [PSUBS-MAILIST] DXF Files
OkyDoky !
Just wanted to make sure. :-)
Thanks, --Steve
----- Original Message -----
From: Warrend Greenway <dub@linuxmail.org>
To: <personal_submersibles@psubs.org>
Sent: Monday, January 13, 2003 1:12 PM
Subject: Re: [PSUBS-MAILIST] DXF Files
> You are wrong, Steve! You can do it however you know how!
> The software I am familiar with creates 2D drawings from
> 3D, but the other way around is perfectly vaild. I don't
> think that this will cause any problems for some time, since
> all interchange will be in 2D through initial design. If
> I've missed something, then slap MY hand!
>
> Warren.
>
> > I'm probably reading this wrong and missing the the point.
> >
> > Are we bypassing the 2D drawing process for "strictly" 3D?
> >
> > If we are sticking to standards then the standard practice is
> > to start with drawing a 2D plot : the profiles, mid-sections,
> > top, side...etc. From there the subsequent drawings illustrate
> > the detailed work; hydraulics, propulsion, control system...etc.
> >
> > *From the 2D plot (s)a dataset is derived to produce a 3D plot and
> > rendering.
> >
> > ( I suppose it could be done the other way around and take the
> > points off of the 3D and produce a 2D, but it's a backward way
> > to do things )
> >
> > Whether it's commercial or non-commercial ( open source )
> > architects and Naval Architects follow this practice to produce
> > an official construction document.
> >
> > If I'm wrong about this then slap my hand and I will be happy!
> >
> > --Steve
> >
> >
> >
> > ----- Original Message -----
> > From: <jbarlow@bjservices.ca>
> > To: <personal_submersibles@psubs.org>
> > Sent: Monday, January 13, 2003 1:28 AM
> > Subject: Re: [PSUBS-MAILIST] DXF Files
> >
> >
> > >
> > > How do dxf files work? I am very curious.
> > > I have used them for years and have no inkling.
> > > Jay.
> > >
> > >
> > >
> > >
> > >
> > > "Warrend Greenway"
> > > <dub@linuxmail.org> To:
> > personal_submersibles@psubs.org
> > > Sent by: cc:
> > > owner-personal_submersible Subject: Re:
> > [PSUBS-MAILIST] OSS
> > > s@psubs.org
> >
> > >
> > >
> > > 12/01/2003 10:42 PM
> > > Please respond to
> > > personal_submersibles
> > >
> > >
> > >
> > >
> > >
> > >
> > > DXF can store 2D. ??? What format would your recommend? I actually
hate
> > > DXFs since I know
> > > how they work! I only recommended them because every CAD program I
know of
> > > can utilize them.
> > >
> > > Warren.
> > >
> > > > No DXF!!! 2D only!
> > > >
> > > > DWG or SAT for 3D (volume, mass info)
> > > >
> > > > Pierre
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > >From: "Warrend Greenway" <dub@linuxmail.org>
> > > > >Reply-To: personal_submersibles@psubs.org
> > > > >To: personal_submersibles@psubs.org
> > > > >Subject: Re: [PSUBS-MAILIST] OSS
> > > > >Date: Mon, 13 Jan 2003 09:31:52 +0800
> > > > >
> > > > >OK. You have a lot of opinions. :) Ready to help compile that list
of
> > > those
> > > > >interested
> > > > >and the skills they bring to the table? A landlubber is perfectly
> > > suited.
> > > > >Furthermore,
> > > > >you seem to grasp the situation perfectly. I don't think we need to
> > > worry
> > > > >about a new
> > > > >server at this point, but I have a server I would offer to the
cause if
> > > it
> > > > >ever got to
> > > > >that point. What I would like to see is everyone who has expressed
> > > interest
> > > > >to either
> > > > >post their wish-list or e-mail them to myself or you...:) So we can
> > > compile
> > > > >a preliminary
> > > > >spec. It will probably change a bit as time goes on, but it will
give
> > us
> > > a
> > > > >place to start!
> > > > >Please, all, spec the following:
> > > > >1. Length
> > > > >2. Diameter
> > > > >3. Speed
> > > > >4. Range or dive time
> > > > >5. Safe dive depth
> > > > >6. Cost window
> > > > >7. Further comments
> > > > >
> > > > >It seems like lead acid is the power source of choice. I can handle
a
> > > PWM
> > > > >speed control,
> > > > >so I don't think we need to worry about potentiometers or anything
like
> > > > >that. Batteries
> > > > >and motor should probably be stored outside the pressure hull.
Steel
> > > seems
> > > > >to be the
> > > > >pressure hull material of choice. Gauges and electronics should be
left
> > > > >flexible, to
> > > > >accomodate a variety of tastes, needs, and budgets.
> > > > >
> > > > >Let's agree to use DXF for electronic drawings and TXT or HTML for
> > text.
> > > > >
> > > > >Warren.
> > > > >warrend@decagon.com
> > > > >
> > > > >
> > > > > > Good Evening all,
> > > > > >
> > > > > > I just read all the posts since this morning... wow! You've
been
> > > busy.
> > > > > >
> > > > > > OK... here goes. Carsten had some good points. I think if I
spent
> > > > > > hours on end burning the midnite oil and then saw that somebody
was
> > > > > > selling the plans in the back of Popular Mechanics... and
getting
> > > rich,
> > > > > > I'd be furious.
> > > > > >
> > > > > > Now... open source does not necessarily mean the project could
not
> > be
> > > > > > turned to profit making. There are lots of people making money
from
> > > > > > Linux, after all. I also wonder how we might control anyone who
did
> > > > > > decide to take the OSS design and start building and selling
it...
> > > > > > copyleft documents would not do.... as such documents do in fact
> > > allow
> > > > > > one to reproduce and sell it. We need rather, a patent on any
> > > > > > intelectual property in the design to do this.
> > > > > >
> > > > > > I think that the best way to control commercial use of the
project
> > > would
> > > > > > be to design it such that it would not be commercially viable.
> > I.e.:
> > > a
> > > > > > one person submersible could never be used to "give rides", and
the
> > > > > > potential market for such a machine would be negligible.
Liability
> > > > > > would kill it before the first dozen had hit the water.
> > > > > >
> > > > > > The other thing is that it should be stressed concept only. The
> > idea
> > > > > > would be for people to build their own machines to the
> > specifications
> > > in
> > > > > > the project documents... not for anyone to try to market a kit
to be
> > > > > > assembled.
> > > > > >
> > > > > > If we produce the plans and the documentation... this material
could
> > > and
> > > > > > most certainly would be copyrighted. It could be distributed
free
> > of
> > > > > > charge in electronic form. Just the fact that we would be
giving it
> > > > > > away free would discourage competition.
> > > > > >
> > > > > > A separate list with url... well, it certainly could be done,
but
> > how
> > > > > > big a monster is this going to become? Do we need a new list?
Do
> > we
> > > > > > need a new server... possibly with a forum? Right now this is
all
> > > new
> > >
> > > > > > and exciting... like the new girl in school... but the early
> > interest
> > > > > > may fade as the drudgery hits.
> > > > > >
> > > > > > A camel has been described as a horse designed by comittee...
but
> > > then,
> > > > > > a camel is a pretty impressive piece of technology. Even though
God
> > > > > > likely did not consult a comittee upon finalizing the two or
three
> > > > > > designs, the concept is still valid. I think that this would
> > > function
> > > > > > best if somebody would take charge and start assigning tasks as
soon
> > > as
> > > > > > possible.
> > > > > >
> > > > > > We perhaps need to compile a list of who is interested. We
could
> > > easily
> > > > > > form our own mail list and take it off the psub list... but you
know
> > > > > > what? I suspect that even those not participating would find
the
> > > > > > project of interest and it would be a simple matter to set
filters
> > up
> > > to
> > > > > > shunt anything with "OSS" in the subject line to a specific
> > location.
> > > > > >
> > > > > > A wish list might be one of the first things to be enumerated...
> > just
> > > as
> > > > > > soon as we know who we are.
> > > > > >
> > > > > > This could work. For some reason I don't understand, there
seems to
> > > be
> > > > > > quite a bit of commeradery here... and little or no bickering.
> > > > > >
> > > > > > OK, enough from the landlubber. I've already put out my "wish
list"
> > > and
> > > > > > mentioned how I think I might be able to help. I'm going to sit
> > back
> > > > > > and watch until somebody tells me to go out and get an original
copy
> > > of
> > > > > > the plans for Trieste or something.
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Dale A. Raby
> > > > > > Editor/Publisher
> > > > > > The Green Bay Web
> > > > > > http://www.thegreenbayweb.com
> > > > ><< dalesignature.gif >>
> > > > >
> > > > >--
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