On 1/8/2006 at 2:20 PM C Fernandez wrote:
 Any idea what IBM used in the IBM PS/2 Model 80, and
many of the older
RS/6000's?  It's some kind of plastic, but not ABS.  It's quite fibrous
looking on the inside.  It seems to be very strong. 
Well, I don't have a PS/2 model 80, but various materials can be added as
filler to most plastics to improve strength.
Cheers,
Chuck