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 LEGO Company / LEGO Direct / 2812
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Subject: 
Re: Very loose tolerances in the manufacture of LEGO bricks?
Newsgroups: 
lugnet.lego.direct
Date: 
Sun, 10 Jun 2001 19:02:30 GMT
Viewed: 
536 times
  
In lugnet.lego.direct, Christopher Masi writes:
When I went to

http://club.lego.com/eng/newstuff/default.asp

I noticed this statement

             Thousands of a mm - that's the tolerance of
             accuracy at the LEGO mould factories.

I don't think that you mean that the tolerances are on the order of meters (a
thousand mm is a m), do you?

I can't get into the Web Club to read this (because my userid has
been nuked for some reason) so I don't know the context.  But as
Jake McKee has already posted, this would be thousandths of a
millimetre (1/1000 or 0.001 mm).  For you non-metric people
this is 0.0004 in.

Having said that I find it highly unlikely that LEGO is generally
holding those kinds of dimensional tolerances on their plastic
elements.  And attempting to hold it would be silly.  Even on
non-plastic parts I would doubt they are holding much tighter
than 0.01 mm (0.004 in).  And by just looking at their pieces
now, I can certainly say they sometimes have trouble hitting inside
of 0.1 mm (0.04 in).

I have asked LEGO about this in the past, but they refused to
answer citing that it's all highly proprietary and such.

KDJ
_______________________________________
LUGNETer #203, Windsor, Ontario, Canada



Message has 1 Reply:
  Re: Very loose tolerances in the manufacture of LEGO bricks?
 
(...) Except in rare cases, the tool has to be a tighter tolerance than the product. I have no trouble whatsoever imagining (read that as speculating please!) that the tolerances on the molds are at .001 mm and that due to non uniform cooling, (...) (23 years ago, 10-Jun-01, to lugnet.lego.direct)

Message is in Reply To:
  Very loose tolerances in the manufacture of LEGO bricks?
 
When I went to (URL) noticed this statement Thousands of a mm - that's the tolerance of accuracy at the LEGO mould factories. I don't think that you mean that the tolerances are on the order of meters (a thousand mm is a m), do you? Chris (23 years ago, 10-Jun-01, to lugnet.lego.direct)

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