Subject:
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Are 1x2 bricks symmetrical?
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Newsgroups:
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lugnet.general
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Date:
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Sat, 17 Nov 2001 21:49:03 GMT
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Make a wall of 1x2 bricks. Are the cracks between them uniform? If not, why?
Can you make the cracks uniformly sized by flexing the wall? What about
flipping around the bricks? Are these processes equivalent, or is there an
asymmetry in the basic 1x2 brick when viewed face-on?
Inside the brick is a set of numbers (part number, and something else--mold
position?) The numbers provide orientation. Looking at the number in reading
position, I'll call the top end of the brick Head and below the numbers
Tail. To observe the numbers easily, point a light source directly into the
brick.
In my experiments with new sand red bricks, the crack seems to be smaller
when two Tops are adjacent. The crack is widest with the Bottoms adjacent.
If this is truly an assymetry then the most uniform wall would result from
orienting all bricks in the same Top-to-Bottom direction.
A bag of new brown 1x2 bricks did not seem to have any assymetry.
Another explanation for the appearane of assymetry could be: the slight
variation in brick placement which makes it possible to flex "solid" walls.
What would be the cause of physical assymetry in one color of bricks? Other
than the original mold, cooling rates could be a factor. Perhaps one end of
the brick is cooled faster, Perhaps the color of plastic gives it different
thermal properties as well.
Is this worth taking into consideration when building? Only if the pattern
of uneven cracks detracts from the model's beauty. For instance, since there
is no 1x5 brick you must use at least two bricks end to end, leaving visible
cracks. In multicolor models, it could be desirable to have small "pure"
areas of a contrasting color; imperfections within one color area can be
seen as defects.
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