Subject:
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Re: More Heat Testing
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Newsgroups:
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lugnet.storage
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Date:
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Wed, 1 Mar 2000 03:08:22 GMT
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Viewed:
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2673 times
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In lugnet.storage, James Brown writes:
> For a better test, I'd suggest turning your stove on as low as it will go
> (probably around 100F or so, and leave a handful of bricks in there for
> several hours, at least. Something that doesn't soften at a high temp
> (briefly) might do so at a lower temp (long term).
You might also try putting some sort of load on the bricks in the oven. Lego
parts stored in an attic would most likely be stored tubs or boxes in which
case the bricks on the bottom would be compressed by the bricks above. Bricks
might get just soft enough to "creep" at attic-like temperatures (what is the
hottest an attic gets?). Creep takes both load and time, so while a few bricks
in an oven for a few minutes might be ok, bricks under some weight for several
hours might distort enough to lose their snug Lego fit.
If I remember my polymer chemistry correctly (a big assumption) there should be
a specific temperature at which Lego plastic becomes soft. So it might be a
valuable experiment to put a brick under some weight and turn up the
temperature slowly until the brick distorts under the weight. Temperatures
significanlty below (maybe 20 degrees F) that distortion point should be ok for
storage.
Of course, if anyone out there actually is a materials engineer or polymer
chemist, feel free to correct me.
Phil
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Message has 2 Replies:
 | | Re: More Heat Testing
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| Over the past few years I have had a chance to play w/several types of ABS/plastics and various heating elements(1) to make race car body parts(2). Lego ABS melts at about 220 degres easily. A 15watt soldering iron can cut right thru them (...) (24 years ago, 3-Mar-00, to lugnet.storage)
| | | Re: More Heat Testing
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| Well, this was a while ago but I just found it, so sue me. :-) (...) And MUCH more so if they were there for days, or months. Too bad I didn't think of that before I left my bricks in Israel... I hope they're alive when I reunite with them (next (...) (24 years ago, 4-Jun-00, to lugnet.storage)
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Message is in Reply To:
| | Re: More Heat Testing
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| (...) For a better test, I'd suggest turning your stove on as low as it will go (probably around 100F or so, and leave a handful of bricks in there for several hours, at least. Something that doesn't soften at a high temp (briefly) might do so at a (...) (24 years ago, 29-Feb-00, to lugnet.storage)
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