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<snip> > At some point in its
> history it was outside. It is all white bricks and there is yellowing. What I
> don't understand in that the yellow bricks are not consistent. They are 1x8,
> one next to another and one maybe yellow and the other is pure white. About
> every fifth brick is yellowed in random patterns all over the piece. Any reason
> that you can think of? This has puzzled me for some time now.
> Thanks
> John P
As someone who has had the dubious pleasure of maintaining a piece like that, I
can tell you that it had gotten damaged. (Little curious fingers, pulling,
pushing, etc.) When something like that receives damage, someone has to repair
it. You use what you have on hand, and replace with appropriate pieces what is
too damaged to re-use. The more recent the repair, the newer the pieces look.
I hope that satisfies your curiosity.
Have Fun!
C-Ya!
Rich
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In lugnet.color, Richard W. Schamus wrote:
> <snip> > At some point in its
> > history it was outside. It is all white bricks and there is yellowing. What I
> > don't understand in that the yellow bricks are not consistent. They are 1x8,
> > one next to another and one maybe yellow and the other is pure white. About
> > every fifth brick is yellowed in random patterns all over the piece. Any reason
> > that you can think of? This has puzzled me for some time now.
> > Thanks
> > John P
>
> As someone who has had the dubious pleasure of maintaining a piece like that, I
> can tell you that it had gotten damaged. (Little curious fingers, pulling,
> pushing, etc.) When something like that receives damage, someone has to repair
> it. You use what you have on hand, and replace with appropriate pieces what is
> too damaged to re-use. The more recent the repair, the newer the pieces look.
>
> I hope that satisfies your curiosity.
>
> Have Fun!
> C-Ya!
>
>
> Rich
Hi Rich
I don't think that is the problem in that it is random all over the piece and
there is no way these could have been damaged. There will be a row with 30 pure
white and 20 yellowed and the new row is both also. This is from the bottom of
the piece to the top on all sides. There is now way these could have come loose
or have been repaired. I would say that 1/5 of the bricks are yellowed,
randomly on all walls. It would have destroyed the piece to replace any on the
walls in this number. Any other thoughts? Thanks
John P
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In lugnet.color, John Patterson wrote:
> I don't think that is the problem in that it is random all over the piece and
> there is no way these could have been damaged.
I've been told this is common among white elements especially-- that they're
more susceptible to light damage (or perhaps just that it's more noticeable in
white). I was told (IIRC this was from master builders in Enfield) that even the
tiniest of tiny variations can make a white piece go yellow, such that even
elements in the same batch of bricks can behave differently.
From the sounds of it, though, I'd guess that when it was being constructed, it
was being built from several different batches of white, a few of them being
more vulnerable to light.
DaveE
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In lugnet.color, David Eaton wrote:
> In lugnet.color, John Patterson wrote:
> > I don't think that is the problem in that it is random all over the piece and
> > there is no way these could have been damaged.
>
> I've been told this is common among white elements especially-- that they're
> more susceptible to light damage (or perhaps just that it's more noticeable in
> white). I was told (IIRC this was from master builders in Enfield) that even the
> tiniest of tiny variations can make a white piece go yellow, such that even
> elements in the same batch of bricks can behave differently.
>
> From the sounds of it, though, I'd guess that when it was being constructed, it
> was being built from several different batches of white, a few of them being
> more vulnerable to light.
>
> DaveE
Thanks David, that makes sence
John P
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In lugnet.color, David Eaton wrote:
> In lugnet.color, John Patterson wrote:
> > I don't think that is the problem in that it is random all over the piece and
> > there is no way these could have been damaged.
>
> I've been told this is common among white elements especially-- that they're
> more susceptible to light damage (or perhaps just that it's more noticeable in
> white). I was told (IIRC this was from master builders in Enfield) that even the
> tiniest of tiny variations can make a white piece go yellow, such that even
> elements in the same batch of bricks can behave differently.
>
> From the sounds of it, though, I'd guess that when it was being constructed, it
> was being built from several different batches of white, a few of them being
> more vulnerable to light.
>
> DaveE
ABS in and of itself will yellow. With white the yellowing is just more evident.
Yellowing occurs in blue and red and all the other colors but is masked. It is
analogous in paint to the fact that certain resins will yellow with age. Acrylic
is perhaps the best of the bunch and very, very little yellowing if any . Hence
the widespread use of acrylic resin in white paint. There is no solution I can
think of for yellowing of white bricks--except to change from ABS. ABS however
has other qualities that make it a good plastic for LEGO bricks. The human eye
can discern millions of different combinations of hues and values.
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In lugnet.color, John Patterson wrote:
> Hi Rich
> I don't think that is the problem in that it is random all over the piece and
> there is no way these could have been damaged. There will be a row with 30 pure
> white and 20 yellowed and the new row is both also. This is from the bottom of
> the piece to the top on all sides. There is now way these could have come loose
> or have been repaired. I would say that 1/5 of the bricks are yellowed,
> randomly on all walls. It would have destroyed the piece to replace any on the
> walls in this number. Any other thoughts? Thanks
> John P
Is there any consistency of fading by brick type, that could be explained by
different molding batch?
I have huge constructions of white and yellow bricks which were not consistent
from the factory. The 1x4s and 2x2s were obviously differently colored right out
of the box. Generally, they exhibited differing bluish tints when new (this is
particularly ghoulish on the yellow bricks.) Over time the distinctions have
become more obvious.
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In lugnet.color, Erik Olson wrote:
> In lugnet.color, John Patterson wrote:
>
> > Hi Rich
> > I don't think that is the problem in that it is random all over the piece and
> > there is no way these could have been damaged. There will be a row with 30 pure
> > white and 20 yellowed and the new row is both also. This is from the bottom of
> > the piece to the top on all sides. There is now way these could have come loose
> > or have been repaired. I would say that 1/5 of the bricks are yellowed,
> > randomly on all walls. It would have destroyed the piece to replace any on the
> > walls in this number. Any other thoughts? Thanks
> > John P
>
> Is there any consistency of fading by brick type, that could be explained by
> different molding batch?
>
> I have huge constructions of white and yellow bricks which were not consistent
> from the factory. The 1x4s and 2x2s were obviously differently colored right out
> of the box. Generally, they exhibited differing bluish tints when new (this is
> particularly ghoulish on the yellow bricks.) Over time the distinctions have
> become more obvious.
Thanks, that makes sense too. I wish I could replace these as this is a great
display piece. It is so large I have it on the patio.
John P
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