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.
Marek Idec schrieb: (...) 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 (...) (19 years ago, 8-Mar-06, to lugnet.cad.dat.parts)
