Modification Date: 2015-10-30 18:59:53
Member of Group: ASX10
Alberta Slip creates a glossy transparent brown at cone 10 with the simple addition of 10% frit.
|Alberta Slip Calcined||45.0|
In oxidation, Alberta Slip creates a glaze that is more transparent and lighter in color. It also melts less than in cone 10R so a little flux is needed (thus the use of the frit here). Since Alberta Slip is plastic, you need to use a mix of calcined and raw powder (see http://albertaslip.com for information on preparation of the calcine).
Alberta Slip plus 10% frit 3134 fire at cone 10 oxidation.
Calcined Alberta Slip (right) and raw powder (left). These are just 5 inch cast bowls, I fire them to cone 020 and hold it for 30 minutes. Why calcine? Because for glazes having 50% or more Alberta Slip, cracking on drying can occur, especially if it is applied thick (Alberta Slip is a clay, it shrinks). I mix 50:50 raw:calcine for use in recipes. However, Alberta Slip has an LOI of 9%, so I need to use 9% less of the calcine powder (just multiply the amount by 0.91). Suppose, I needed 1000 grams: I would use 500 raw and 500*.91=455.
Out Bound Links
New York Slip, Albany Clay
Archie Bray Slip
By Tony Hansen+