HP Forum Archive 01

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Presenting Calcs in a glass case Message #1 Posted by Andreas Stockburger on 9 Aug 1999, 3:57 p.m. Hi there, Sure there is somebody who presents his calculators in a glass case. Two questions about that: 1.) In what way did you fix them in the case ? 2.) Is there a possible damage because of sun-light known in such a glass case ? Thanks for your feedback Andreas Stockburger

Re: Presenting Calcs in a glass case Message #2 Posted by DaveJ on 9 Aug 1999, 5:12 p.m., in response to message #1 by Andreas Stockburger I do not store mine under glass, Of course sunlight is hard on any plastic, causing brittlness and yellowing as the plasticizers are driven off and polymer bonds break. Glass would provide some protection to sunlight, possibly special glasses designed to filter out all UV may be best if you must expose the calcs to sunlight.

Re: Presenting Calcs in a glass case Message #3 Posted by Andreas Stockburger on 10 Aug 1999, 8:17 a.m., in response to message #2 by DaveJ Hi, but whats the way in storing them. If you store them in the original case (if it is existent) you need to open and close the cases if you want to see or show them. Over the time the cases gets broken !? Or do you use seperate cases ? Thanks Andreas Stockburger

Re: Presenting Calcs in a glass case Message #4 Posted by DaveJ on 11 Aug 1999, 9:04 a.m., in response to message #3 by Andreas Stockburger I would be most concerned about direct sunlight (with or without a glass shield). A glass case not in direct exposure to sun should be OK. The electronics in calcs of course has only a finite lifetime (depending on the particular part) Avoiding high humidity is beneficial to prevent corrosion.

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