Ravenscrag Cone 6 High Alumina Matte

Code: GR6-F
Modification Date: 2019-03-13 15:03:11
Member of Group: RV6

Plainsman Cone 6 Ravenscrag Slip based glaze. It can be found among others at http://ravenscrag.com.

Ravenscrag Slip60.056.1% 
Ferro Frit 313420.018.7% 
Calcined Alumina10.09.3% 
Cobalt Oxide2.01.9%c
Rutile Ceramic5.04.7%v
* c-colorant, v-variegator, o-opacifier, s-suspender

Firing Schedule

Rate (F)Temp (F)Hold (Min)Step


This is a high alumina matte glaze and is a favorite. It is not temperature sensitive and produces good results at cone 5, 6 and 7 (medium blue surface breaking an olive type green where thin). Most base glazes do not host alumina well and fire with pitting and uneven surface (alumina is very difficult to melt and dissolve). Be sure to use a smallest particle sized alumina you can find (it is available in very fine grades, much finer that the average ceramic material).

For mixing instructions please see the master recipe, GR6-A.

Out Bound Links

XML to Paste Into Insight

<?xml version="1.0"?>
<recipes version="1.0" encoding="UTF-8">
<recipe name="Ravenscrag Cone 6 High Alumina Matte" keywords="Plainsman Cone 6 Ravenscrag Slip based glaze. It can be found among others at http://ravenscrag.com." id="54" date="2019-03-13" codenum="GR6-F">
<recipeline material="Ravenscrag Slip" amount="60.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Ferro Frit 3134" amount="20.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Dolomite" amount="10.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Calcined Alumina" amount="10.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Cobalt Oxide" amount="2.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Rutile Ceramic" amount="5.000" unitabbr="g" conversion="0.0010" added="0"/>
<url url="https://digitalfire.com/4sight/recipes/ravenscrag_cone_6_high_alumina_matte_54.html" descrip="Recipe page at digitalfire.com"/>

By Tony Hansen

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