I would like the address or ph/ no. of the
supplier of the clay and aluminium casting rings.
One source in the US is Rio Grande (800-545-6566). Page 82
of their '98 catalog lists the Delft Clay Casting Kit for
$79.00. The kit consists of 4.4 lbs (2kg) of clay, 1, 2.35"
dia aluminum ring set (2 rings, drag & cope) & instructional
video. They also list 60 mm & 100mm dia ring sets and
replacement pkgs of clay.