John Baymore on tue 20 apr 04
My understanding is that almost all bone ash purchased these days does no=
t
come from actual animal bones, but is chemically produced in labs. Have=
I
been
misinformed?
Simona,
If you check up on it....you can still find "natural" bone ash..... but
usually you have to work to do it. Most of the stuff potters are getting=
commercially these days =
is tri-calcium phosphate........ not a direct product of incinerating
animal bones. It is imporatnt to note that the composition of tri-cal is=
slightly different than that of "natural" bone ash. So if you were using=
a
really old recepie that contained significant bone ash..... the results y=
ou
get might be a bit different from the original.
I have one supplier that I get natural bone ash from when I want it. =
Actually is an industrial specific supplier.... not a "pottery supply"
house. I also calcine chicken bones and ball mill it for "special"
glazes.
best,
.......................john
John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086-5812 USA
JBaymore@compuserve.com
http://www.JohnBaymore.com
603-654-2752 (studio)
800-900-1110 (studio)
"Earth, Water, and Fire Noborigama Woodfiring Workshop: August 2004 Date=
s:
TBA"
=
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