Subject:
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Re: Strange rails
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 23 Jan 2007 21:03:21 GMT
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Viewed:
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3448 times
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Jordan Schwarz wrote:
> There's a pretty comprehensive article on the red test moldings at
> http://www.lucajuventino.altervista.org/lego/red_track.htm
>
> As the article notes, test moldings are often done in red because it
> is the most difficult color to mold. Hence, Jason's theory makes a
> lot of sense. It is surprising that LEGO would do 40 test moldings
> of a rail, but that is a possibility, I guess.
Red may also be (or at one time was), the most used color. So it may be
easiest to load a new mold into a machine running red ABS.
I don't think it's surprising they would do 40 test moldings. The mold
probably has at least 4 rails. And they need to run the mold for several
cycles to evaluate how it's working. Also, they need to run the mold for
enough times to get a statistically meaningfull sample for tolerances. And
it's probably impossible to run the mold for just one shot anyway. By the
time you turn the machine on, see that it actually is cycling, and then turn
it off again, it might have run 10 cycles. Oh, also, if the production line
is going to require more than one copy of the mold, they have to test each
one.
Frank
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Message is in Reply To:
 | | Re: Strange rails
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| (...) There's a pretty comprehensive article on the red test moldings at (URL) the article notes, test moldings are often done in red because it is the most difficult color to mold. Hence, Jason's theory makes a lot of sense. It is surprising that (...) (18 years ago, 23-Jan-07, to lugnet.trains)
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