Subject:
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Re: trying to guess the stud spacing by measuring bricks
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Newsgroups:
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lugnet.cad.dev
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Date:
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Tue, 24 Aug 1999 22:57:23 GMT
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Reply-To:
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lpieniazek@noveraIHATESPAM.com
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Viewed:
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431 times
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I know you went several hundred studs in length if I recall, but is
there any chance that the stud center spacing is actually intended to be
8.000 mm ???
This is not intended as a slur against your measurement technique, but
an honest question. Dunno about the history of the very first molds,
etc... but is it possible?
Robert Munafo wrote:
>
> In lugnet.faq, Adam Howard writes:
> > [...] I used a caliper accurate to .001inches and measured the
> > > thickness of ten walls from various parts. The measurements ranged between
> > > 0.062 and 0.058 inches or 1.5748mm to 1.4732mm.
> > [...]
> > After taking some more samples I have decided I need to take a lot more.
> > So far I've measured about 20 parts varying in size from a 2x2x1 to a 1x6x1
> > as well as odd parts like a horse's hooves. What I have found is contrary
> > to my original conversion and seems to support the 1mm=2.5LD units more,
> > but not quite. [...]
>
> The reason your approach doesn't work is because all LEGO parts are
> deliberately manufactured with a very tiny gap allowance on each
> contact-surface dimension. If this weren't the case, the bricks would not fit
> well when dirty or marred. It might help you to re-read tha paragraph I wrote
> about this issue:
>
> > It is also worthwhile to note that LEGO bricks are always made
> > a little smaller than this dimension would suggest. For example, the
> > length of a 2x4 brick is a little less than 4 times 7.986 millimeters.
> > The length is diminished slightly so that there will be a small gap when
> > bricks are stacked next to each other. This gap allows for dust, marred
> > surfaces and other imperfections. If the gap were not there the bricks
> > would tend to push each other apart and the overall construction would
> > be less strong.
>
> As a result, if you want to measure the stud spacing accurately, you can only
> do so by constructing some type of large construction out of multiple
> overlapping bricks, such as a long horizontal wall. That is how I got my value
> of 7.986 +- 0.002 millimeters.
>
> - Robert Munafo http://www.mrob.com/
> LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13
--
Larry Pieniazek larryp@novera.com http://my.voyager.net/lar
- - - Web Application Integration! http://www.novera.com
fund Lugnet(tm): http://www.ebates.com/ Member ref: lar, 1/2 $$ to
lugnet.
NOTE: I have left CTP, effective 18 June 99, and my CTP email
will not work after then. Please switch to my Novera ID.
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Message has 1 Reply:
 | | Re: trying to guess the stud spacing by measuring bricks
|
| (...) No slur taken! (-: Actually, what I think happened is this: - Some company (it was in England somewhere, right?) stated making bricks, using a nice round number standard like 5/16 inch or 8 millimeters - LEGO bought the rights (or the company (...) (25 years ago, 25-Aug-99, to lugnet.cad.dev)
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Message is in Reply To:
| | trying to guess the stud spacing by measuring bricks
|
| (...) The reason your approach doesn't work is because all LEGO parts are deliberately manufactured with a very tiny gap allowance on each contact-surface dimension. If this weren't the case, the bricks would not fit well when dirty or marred. It (...) (25 years ago, 24-Aug-99, to lugnet.cad.dev)
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