Subject:
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Re: part weight inventory
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Newsgroups:
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lugnet.inv
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Date:
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Mon, 18 Sep 2006 16:36:58 GMT
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Viewed:
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8724 times
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In lugnet.inv, Maggie Cambron wrote:
> Also keep in mind that those who submit weights are those who have the parts,
> so sellers probably are more highly represented as weight contributors. This
> {could} lead to a tendency to round to the high side of weight measurements
> so they don't get caught underestimating a shipment weight. But this is just
> a speculation on my part.
That was my guess too, but yeah, no way to verify. Unless of course someone
wants to take a high-precision scale to every Lego element out there and post
the results. Or, if the Lego Company wants to tell us all what the weights are!
> As for posting piece weights that you have gleaned primarily from BL data, I
> personally don't see a problem, although you may want to state the source.
> And you also may want to use any other sources of weight info you can find
> and average them out if possible for greater accuracy.
I had 3 sources:
1) BrickLink (98.6% of the data). I took the master part list from Peeron, and
had a program bash through all of the pages with weight information on BrickLink
(Trying to be nice, pulled a page every 10+ seconds). So wherever the part
numbers matched, and there was a weight, I stored it. Then, I went through a few
non-standard pieces and adjusted some weights as needed, as well as copying any
non-patterned parts' weights to patterned parts (and visa versa).
2) Christopher Tracey, from post:
http://news.lugnet.com/market/shipping/?n=362
Christopher used a chemistry scale that he had access to for part weighing. I
assumed this data was better than BrickLink data, and overwrote BL data with
his.
3) Lutz Uhlmann, from post:
http://news.lugnet.com/market/shipping/?n=542
In the same thread, Lutz had posted a chunk of his own measurements that he had
taken. I don't believe I overwrote any BrickLink data with his, however.
Part weight data, all bound up:
http://www.suave.net/~dave/tmp/weights.txt
DaveE
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Message is in Reply To:
 | | Re: part weight inventory
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| (...) We assume, but cannot verify, that the weight submissions we get on BrickLink have actually been weighed on a scale. Some submitters add notes with their submissions such as "100 white bricks weighed on a +/- .01g scale" or something like (...) (20 years ago, 18-Sep-06, to lugnet.inv, FTX)
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