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 CAD / Development / Organizations / LDraw / 3463
    Re: No mention of scale in file format doc —Orion Pobursky
   (...) Darn copy and paste monster struck again. I've fixed it now. -Orion (19 years ago, 26-Feb-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Ross Crawford
   (...) Much better! Thanks for that Orion, now I know exactly where to look when I need to remember how many studs per inch ;) ROSCO (19 years ago, 26-Feb-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Stefan Gustavson
   (...) I was wondering about this number in that otherwise very explanatory and very clear figure when I saw it in the Brickfest presentation. I would strongly argue that Lego, being a Danish creation, is in fact metric by design, and that 1 LDU is (...) (19 years ago, 26-Feb-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Orion Pobursky
     (...) You're probably right. The strictest definition is 1 LDU equals 1/20 the width of a 1x1 brick (whatever that measurement turns out to be). -Orion (19 years ago, 26-Feb-05, to lugnet.cad.dev.org.ldraw)
    
         Re: No mention of scale in file format doc —Stefan Gustavson
     (...) I beg to differ. The width of a 1x1 brick is not the same as the spacing between two stud centres. Bricks have a small gap between them, whereas studs are very accurately placed on any brick with more than 1 stud. The LDU unit should be (...) (19 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
    
         Re: No mention of scale in file format doc —Steve Bliss
     (...) No, Orion is correct -- for LDraw. By definition, LDraw parts have no gap. 1-stud-wide bricks are 20 LDU - exactly. We *really* don't want to get into a game of trying model real-world dimensions in great detail. That it, unless someone can (...) (19 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
    
         Re: No mention of scale in file format doc —Orion Pobursky
     (...) I agree but Stefan gave a compelling argument for 1 LDU = 4 mm so I changed the draft proposal. -Orion (19 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
    
         Re: No mention of scale in file format doc —Stefan Gustavson
     (...) Thanks! I'll leave that article up indefinitely, in case the subject comes up again. (Funny how my work always comes into my Lego hobby. Or is it the other way around? I can never tell. I guess I'm just a Lego person.) Stefan (19 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Steve Bliss
   (...) Hmm. Where did that figure come from? I've been using 1 LDU = .4mm for quite awhile now... (...) heh. Don't be *too* sure about that, I seem to remember seeing some early evidence about measurements in English units. But it's a vague memory, I (...) (19 years ago, 28-Feb-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Willy Tschager
     (...) some links about this topic: (URL) I use paul's figures: 1 LDU = 0.015625 inch = 0.396875 mm (19 years ago, 28-Feb-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Stefan Gustavson
   (...) Well, yes, and no. The bricks are not nearly as precise as the molds, but the dimensional tolerances for parts must certainly be a lot tighter than the difference between 1/64" and 0.4 mm. That difference is almost a full percent, so there is (...) (19 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
   
        Re: No mention of scale in file format doc —Steve Bliss
   (...) Well, far be it from me to argue with Science. ;) Steve (19 years ago, 4-Mar-05, to lugnet.cad.dev.org.ldraw)
 

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