Subject:
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Re: Plastic Sheets parts for Mars Exploration Rover (Set 7471)
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Sun, 12 Mar 2006 20:17:55 GMT
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Viewed:
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3412 times
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In lugnet.cad.dat.parts, Michael Heidemann wrote:
> Marek Idec schrieb:
> > Hi,
> > I have purchased recently the LEGO set 7471. It contains 7 parts of 4 different
> > types that imitate solar panels. I created DAT files for all of them. They all
> > are plastic sheets and I copied their names and numbers from Peeron:
> > http://www.peeron.com/inv/parts/x1023a
> > http://www.peeron.com/inv/parts/x1023b
> > http://www.peeron.com/inv/parts/x1023c
> > http://www.peeron.com/inv/parts/x1023d
> > I submitted my files to the Parts Tracker and they can be found here:
> > http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/x1023a.dat
> > http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/x1023b.dat
> > http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/x1023c.dat
> > http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/x1023d.dat
> > Please review them and send me your remarks. In particular I would appreciate
> > your advice on following questions:
> > 1. I didn't know where a point of origin of those parts should be. My arbitrary
> > decision was to locate it in a centre of a hole. I have chosen holes with the
> > lowest value of the z-coordinate and the lowest value of the x-coordinate. The
> > top surface has the y-coordinate equal to 0. If you have any other ideas that
> > could be reasonable, please, let me know. I'm open for your suggestions.
> > 2. I have measured thickness of those sheets with slide calliper. They are 0.6mm
> > thick. I made them 1.5LDU thick in my DAT files. Should I keep the value of
> > 1.5LDU or rather round it to 2LDU? Please notice that they might be used with
> > either flat surface up. In models like 7471 left and right solar panels are the
> > same. If the thickness is 1.5LDU in one of those cases proper positioning of a
> > part might require fractional value of one of coordinates. I know it is not
> > forbidden but with a thickness of 2LDU it would be easier to build models.
> >
> > Regards,
> >
> > Marek
> Dear Marek,
>
> If the parts 0.6mm thick then it is ok to have 1.5 LDU measuring. The
> aim is to make the parts close to original parts not to have easy to
> build with parts.
> Regarding the point of origin I also feel that your decision to take one
> of the holes is a good one.
> I only have problems with the part number, because if we do not know the
> original LEGO part no we normally ask the admin of the parts tracker to
> give a part no. That is a three digit no with a leading x as long as it
> is on the parts tracker. Once it is certified the leading x will be
> taken away and the three digit no is then the part no in the LDraw
> system. So I will now go for the parts and put a hold vote until the
> parts are renumbered.
>
> Cu
> MikeHeide
Dear Michael,
Thank you for your comments. Giving to my files the number x1023 I assumed that
there is a relationship between Peeron numbers like "x-something" and names in
Parts Tracker. I have just checked some random parts if such temporary numbers
are the same in both systems. I was wrong. There is no relationship. In this
case I am going to ask Parts Tracker admin to assign number to those part.
Regards,
Marek
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