Re: working with cellulose

Thanks for the replies to my original posting. I checked my original
source and discovered that he was talking about celluloid, not cellulose.

In my original posting, I also asked about other photoelastic materials.
I've since read the book Plastics for the Craftsman, by Jay and Lee Newman.
It has a lot of information about working with acrylics and a search of
the web indicates that acrylics are indeed photoelastic (however, I don't
know whether ALL acrylics one is likely to purchase are photoelastic). So
that might be a way to go. Some of the sources they cite for supplies are
still in business but the book is somewhat dated in that respect (1972).

I'm not too sure how much to expect to pay for blocks of transparent,
colorless acrylic of various sizes and thicknesses. I've looked at some
places on the web but I have no idea what is actually a reasonable price.
Some of the pieces I'd need might be a few inches thick. With heating, one
can combine blocks but it would be better if that were unnecessary.

Ignorantly,
Allan Adler
[EMAIL PROTECTED]

****************************************************************************
*                                                                          *
*  Disclaimer: I am a guest and *not* a member of the MIT Artificial       *
*              Intelligence Lab. My actions and comments do not reflect    *
*              in any way on MIT. Moreover, I am nowhere near the Boston   *
*              metropolitan area.                                          *
*                                                                          *
****************************************************************************