Low Fire Talc:Ball Clay Casting Mix
Standard low fire ceramic casting body. This is the same recipe as L213 (talc and ball clay) but different brand names are employed (KT1-4 ball clay instead of M23 and Pioneer Texas talc instead of Silverline Montana talc). These brands are the whitest commonly available. The KT1-4 is also larger particle size and deflocculates better than the more plastic M23 used in L213 (since the latter is a throwing body).
Traditionally people have used sodium silicate and soda ash to deflocculate their slip. However, Darvan is a superior product. We recommend understanding the principles of deflocculation so that you can measure specific gravity and recognize whether a slurry is under or over deflocculated. This will enable you to adjust the recipe for variations in water, materials, climate, etc.
The following is under-construction Nov 6, 2020
For a 50 lb bag of talc/clay mix:
The longer you can mix the slurry there better its properties will be.
Ball clay:talc bodies have incredible casting properties. This bowl is 13cm across yet has a wall thickness of less than 2mm and weighs only 101g! It released from the mold with no problems and dried perfectly round. And when fired at cone 04-06 it will stay round!
Safety Data SheetClick here for web view.
|Plainsman Clays Ltd.|
702 Wood Street, Medicine Hat, Alberta T1A 1E9
Phone: 403-527-8535 FAX:403-527-7508