Polyurethane and modern human bones

Thanks to Niccolo Caldararo for the note on the Krylon products.  In
any case, B-66 is superior to polyurethane in its aging properties.
This case is another example of why conservators should not be
relying on proprietary products.  When non-conservators do
treatments and cannot mix their own materials, they need to be as
particular as possible about their material choices.

B. Appelbaum

                                  ***
                  Conservation DistList Instance 12:52
               Distributed: Wednesday, December 16, 1998
                       Message Id: cdl-12-52-002
                                  ***