Perhaps some of the readers familiar with enameling could share
their wisdom on Johnson Matthey’s Blythe Enamels.
Just how acid and chemical resistant are the older transparent
In particular, # 225 Green (date on package is 9 December 1975) & #
788 Blue (not dated on package …may be mid 1970’s too). My
original 1/2 kilo packages for #'s 225, 788 & 2092 indicate
In Jeanne Werge-Hartley’s book she provided a very useful table of
technical on firing temperatures (attributed to Vitrum
Signum on pg. 162). However, I have an void when it
comes to chemical and acid resistance of these transparents; and I
am contemplating electroforming some Blythe enameled pieces.
As I recall; the following are probably 25 year old Blythe product.
Possibly someone knows of an old Blythe product profile similar to
that found in “Enameling on Precious Metals” with technical data on
temps and flow point for the following (not found in Jeanne’s book):
OPAQUES 557 Purple 682 Green 684 Blue 1924 Blue 2174 Blue 3016 Brunswick Green K31 3040 Mauve A25 Transparent 225 Green (date on package is 9 December 1975) 242 Chedron 788 Blue (not dated on package may be mid 1970's) 935 Red 1072 Yellow 2092 Gray Green (date on package is 5 Aug 1978) Opalescent 1533 White