Re: [PSUBS-MAILIST] Reverse engineering in CAD

[Steven Mills <cirtemoeg@juno.com>]

[ Off Subject ]
[ Re:Subject: Submersible Design Software 
Date: Mon, 20 Oct 2003 ]

Ian,

were you able to resolve the data conflict and run your model
thru "DynaMechs" ?

--Steve


On Thu, 17 Jun 2004 18:59:17 -0700 Ian Roxborough <irox@ix.netcom.com>
writes:
> 
> Hi Peter,
> 
> I don't really know anything about autocad2004, but if it's worth 
> it's
> salt then it I'll probably have the following features.
> 
> NURBS!
> 
> See if your cad/modeling software has Nurbs support (Nurbs are just
> fancy curves or a fancy word for curves).  You should be able to use
> the Nurbs tool to create some boat like curves, similar to the ribs
> of a woodern boat (you may want search drawning Nurbs or curves on
> the internet or in the library, but if mess around long enough 
> you'll
> probably get the hang of it).
> 
> Once you have enough curves (draw them a foot a part, or whatever 
> you
> think it takes) to get it to start looking boat-ish, then save your
> work and look for a "skinning" tool.  A "skinning" tool (I've no 
> idea
> what it will be called in autocad) should allow you to select all 
> your
> curves, then create a skin that fits prefectly over the curves.  
> You'll
> probably find that you have to edit the curves a few times before it
> starts looking correct.
> 
> But that's pretty much it.  Not too different from the join the 
> dots,
> only with curves.... ;-)
> 
> If your doing solid modelling, then hopefully there is tool for 
> giving
> the skin 'thickness' or volume.  Otherwise you might have to create 
> a
> copy of the hull and shrink it down by a very very small amount and 
> put
> it inside the bigger hull skin, then joint the two object together. 
> The
> distance between the inner and outer skin determines how thick the 
> hull
> will be.
> 
> This is how I would tackle the problem, but it's probably worth 
> noting
> that the software I use to do this type of thing isn't a true solid
> modeller.
> 
> Hope this helps.
> 
> Ian.
> 
>.........................cut...............................


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