Subject:
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Re: How are LDraw piece numbers allocated?
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 8 Oct 1998 01:55:12 GMT
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Viewed:
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971 times
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Terry K wrote:
>
> Steve Anderson wrote:
> >
> > I mean, I look at this great list of numbers and LDraw masters know them
> > all... I can't see any pattern or anything beyond the obvious (like minifig
> > legs and things like that).
> >
> > It's just that Mr Eriksson above has already got a number for that wing,
> > and it confuses me terribly...
>
> The pattern is not obvious.
> The goal is to have the actual, correct, TLG part numbers for each and
> every part. The problem is many pieces have no number molded into
> them. Generally, the four digit numbers are correct. As are the five
> digit ones starting with 7 or 8.
> Note that any LDraw parts that have three digit numbers, like the
> legs, are not the correct numbers. These are just "placeholders".
> Numbers that have a "P" in them, whether 3 or 4 digit, denote
> "patterned" versions of a part, and also are not correct. The numbers
> after the "P" are just a unique way of ID'ing the pattern.
> If the correct number for a part is found, then it is updated. The old
> number is then used as a "pointer" to the new correct number. So
> remember, any number is subject to change. Three digit or patterned
> numbers especially so.
> There is a pattern of sorts. There is at least one person who has a
> hobby of tracking and analyzing part numbers, Joshua Delahunty. He can
> tell when parts were released, and what sets they were first released
> in. He also can make pretty accurate educated guesses, based on his
> data, of what number a part should have. Though we do _not_ use these
> guesses in numbering parts.
> We depend on confirmation from other sources before committing to a
> number.
>
> Probably more than you wanted to know.... :-)
> BTW, I work with those numbers all the time in doing updates, plus
> building models. And I _still_ don't remember them. I can remember
> 3001 for 2x4 brick, 3023 for 1x2 plate, 3666 for 1x6... dang! See?
...plate, 3009 is the brick. :-P
Actually, they all started out with a fairly OK pattern:
Brick Plate Slope45 Tile
2x4 3001 3020 3037 ----
2x3 3002 3021 3038 ----
2x2 3003 3022 3039 3068
1x2 3004 3023 3040 3069
1x1 3005 3024 ---- 3070
But it broke down fairly quickly (the elements in the gaps above aren't
super clean, either).
If we try to continue the chart, you see the mess
Brick Plate Slope45 Tile
2x10 3006 3832 ---- ----
2x8 3007 3034 ---- ----
1x8 3008 3460 ---- 4162
1x6 3009 3666 ---- 6636
1x4 3010 3710 ---- 2431
BTW, I did the top table from memory, needed help with the second
(especially the tiles in the second).
-- joshua
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Message is in Reply To:
 | | Re: How are LDraw piece numbers allocated?
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| (...) The pattern is not obvious. The goal is to have the actual, correct, TLG part numbers for each and every part. The problem is many pieces have no number molded into them. Generally, the four digit numbers are correct. As are the five digit (...) (26 years ago, 7-Oct-98, to lugnet.cad)
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