cone 5-6 casting slip

updated wed 6 apr 11

Susannah Biondo-Gemmell on mon 4 apr 11

I am currently using the cone 5-6 VC casting slip Cushing's book. It is =
=3D
very=3D20
short and cracks often when casting larger objects.

Does anyone have a cone 5-6 white casting slip that is fairly durable?=3D20=
=3D
=3D20

Thanks,
Susannah Biondo-Gemmell