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In lugnet.market.auction, talonts@vfaq.com (Tom Stangl, VFAQman) writes:
> "Tom Stangl, VFAQman" wrote:
> > OK, the bidding on these 20 bricks in a wellknown auction has gotten insane
> > enough that I decided to see if I had enough of them to list as a solitary
> > auction. [...]
>
> Well, I'm a bit braindead - the ones in the other auction are the
> "macaroni" bricks
> ( http://www.lugnet.com/ldraw/parts/?c=15&n=3063 ), mine are FOURbyFOUR
> quarter-circles
> ( http://www.lugnet.com/ldraw/parts/?c=15&n=2577 ). So please temper your
> bidding with this knowledge, as mine aren't quite as rare/popular. [...]
I think I see what happened -- the source of the confusion is in the
terminology -- and I made the same mistake that Tom made when I read his
post (I just saw the words "quarter-circle" and "white" and glossed over the
"4x4" part).
The AucZILLA nomenclature uses mathematical/geometrical terms, so inside of
it there is a distinct difference between the word "circle" and the word
"disc."
In geometry,
- A circle is the locus of coplanar points all at some distance r from some
point O.
- A disc is the locus of coplanar points all at or less than some distance r
from some point O.
In other words, a circle is "open" and a disc is "filled in."
So a 4x4 bricks of the type Tom has for sale are (in AucZILLA terminology)
referred to as "4x4 Quarter-Disc Bricks" because the centers are filled in
with studs. The "macaroni" bricks are (in AucZILLA terminology) referred to
as "2x2 Quarter-Circle Bricks" because they make a circle rather than a
filled-in disc.
There is no equivalent 2x2 version of the 4x4 version of the 4x4 Quarter-
Disc Brick and no equivalent 4x4 version of the 2x2 Quarter-Circle brick,
although the 2x2 full-disc brick is (in AucZILLA terminology) referred to as
a "2x2 Cylinder Brick," so there is plenty more room for confusion here,
since the 4x4 Quarter-Disc brick could also reasonably be referred to as a
"4x4 Quarter-Cylinder brick." :-,
--Todd
p.s. The AucZILLA nomenclature no longer refers to 2x2 Quarter-Circle
bricks directly as "macaroni bricks" because of the (somewhat recent) 2x2
elbow-macaroni pipes that appear in, for example, 5561 Big Foot 4x4 -- those
are actually almost *perfect* replicas of elbow macaroni -- completely round
with holes at both ends and no studs, whereas the 2x2 Quarter-Circle bricks
have studs on top and aren't really much like macaroni, except for the
elbow-bend.
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Message has 2 Replies:
 | | Re: Circle/Disc terminology
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| In your terminology, though, I'd argue that they should not be called circles! Circles have no thickness. What will you do if TlG brings out the following bricks... a 4 radius cylinder with a 2 radius cylinder subtracted b 4 radius cylinder with a 3 (...) (25 years ago, 10-May-99, to lugnet.market.auction, lugnet.admin.database)
| | | Re: Circle/Disc terminology
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| Isn't there any web site that has generally agreed on names for all the lego bricks? (Or even better - one where the names are being decided and we can all argue over them <grin>) Simon (URL)I think I see what happened -- the source of the confusion (...) (25 years ago, 10-May-99, to lugnet.market.auction, lugnet.admin.database)
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