Subject:
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RE: Aluminum 2x4 bricks
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Newsgroups:
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lugnet.cad
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Date:
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Fri, 5 Apr 2002 22:35:17 GMT
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Reply-To:
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<BRAM@PO.CWRU.EDUstopspam>
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Viewed:
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335 times
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Franklin W. Cain writes:
> In lugnet.general, Bram Lambrecht writes:
> > Since the design I based the part on is based on 1/16" = 4 LDU...
>
> Bram,
>
> The metric I use is 1 LDU = 1/64". Here's how I derived it.
> The classic 2x4 brick is one and a quarter inches long
> (1.25") and is 80 LDU long. Thus, 80 LDU = 1.25" = 5/4".
> Dividing both sides by 80 gives 1 LDU = 5/320" = 1/64". Hope
> this helps!
Those are the dimensions I did use, Franklin :) However, those
dimensions are NOT accurate to .001 inch. And that discrepancy
apparently makes a significant difference in the connection properties
of the part.
--Bram
Bram Lambrecht
bram@cwru.edu
www.bldesign.org
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Message has 2 Replies:
 | | Re: Aluminum 2x4 bricks
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| (...) Yeah, I know. My brain slipped into "helpful" mode before I finished reading and thinking... :-P (...) Thus demonstrating the "real world" difference between a scientist and an engineer. Good luck, and keep us informed, OK? (And, what do you (...) (23 years ago, 5-Apr-02, to lugnet.cad)
| | | Re: Aluminum 2x4 bricks
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| (...) I did some measurements a little over a year ago. I didn't write it up as well as the "long wall" post referenced by Larry, but here you go: (URL) also that I didn't measure temperature (it was "room temperature" or so), nor did I look into (...) (22 years ago, 8-Apr-02, to lugnet.cad)
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Message is in Reply To:
| | Re: Aluminum 2x4 bricks
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| (...) Bram, The metric I use is 1 LDU = 1/64". Here's how I derived it. The classic 2x4 brick is one and a quarter inches long (1.25") and is 80 LDU long. Thus, 80 LDU = 1.25" = 5/4". Dividing both sides by 80 gives 1 LDU = 5/320" = 1/64". Hope this (...) (23 years ago, 5-Apr-02, to lugnet.cad)
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