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Subject: 
Re: LEGO Facts and Figures - tolerance on part sizes
Newsgroups: 
lugnet.general, lugnet.color, lugnet.lego
Date: 
Thu, 24 Feb 2005 22:12:31 GMT
Viewed: 
1774 times
  
In lugnet.faq, Suzanne Rich Green wrote:
Return-Path: <crites@staff.cc.purdue.edu>
Date: Tue, 29 Aug 1995 18:16:53 -0500
From: "Jeffrey T. Crites" <crites@staff.cc.purdue.edu>


from LEGO's own publications:

LEGO `FACTS AND FIGURES'
=======================

<snip>.

     * 5 thousandths of a mm is the tolerance of accuracy at the LEGO
mould factories.

     * <snip>.

This doesn't line up with what Jake said about plate height tolerance last June:

<http://news.lugnet.com/lego/?n=2139>

He said it was 3.2mm +/-0.1mm, twenty times the tolerance quoted above.

What publication was the 0.005mm tolerance taken from - can the relevant part of
it be scanned and posted online?

I have assurances here and claims of fact there but, in the light of this
discrepancy, I'd like to see the printed facts.

Mark



Message has 2 Replies:
  Re: LEGO Facts and Figures - tolerance on part sizes
 
(...) There's a big difference between the *mould* tolerance (the 5 micron one) and the tolerance on the resulting ABS part. Running the process faster, releasing the ABS parts at a higher temperature, will make the produced parts more irregular (...) (20 years ago, 25-Feb-05, to lugnet.general, lugnet.color, lugnet.lego)
  Re: LEGO Facts and Figures - tolerance on part sizes
 
Was Jake talking about the tolerances of the actual mould whereas the Lego facts are refering to the bricks themselves. The moulds would need to be much more accurate than the bricks that came out of them. Dunno, just a thought (20 years ago, 25-Feb-05, to lugnet.general, lugnet.color, lugnet.lego)

Message is in Reply To:
  LEGO Facts and Figures (A repost from Pause archive, by Jeff Crites, 1995)
 
Return-Path: <crites@staff.cc.purdue.edu> Date: Tue, 29 Aug 1995 18:16:53 -0500 From: "Jeffrey T. Crites" <crites@staff.cc.purdue.edu> from LEGO's own publications: LEGO `FACTS AND FIGURES' ===...=== Here's some great information from `LEGO Facts & (...) (20 years ago, 24-Feb-05, to lugnet.faq, lugnet.general)

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