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Ravenscrag Cone 6 High Calcium Matte Blue

Code: g2851H
Modification Date: 2016-09-30 22:46:36
Member of Group: RV6

Plainsman Cone 6 Ravenscrag Slip based glaze. It can be found among others at

Ravenscrag Slip55.051.4% 
Ferro Frit 313410.09.3% 
Cobalt Carbonate2.01.9%c
Rutile Ceramic5.04.7%v
* c-colorant, v-variegator, o-opacifier, s-suspender

Firing Schedule

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


This glaze is temperature sensitive. It requires a slow cool down to allow crystals to grow. If the kiln cools too quickly you will get a glossy glaze. Has a nice soft smooth surface, with a variegated light blue color.

This base will also work well with other coloring oxides/stains. It is temperature sensitive and should be fired to cone 6.

Ravenscrag high calcium blue on M340

Ravenscrag High Calcium Matte

Ravenscrag High Calcium Matte

Courtesy of Jonathan Kirkendall

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 Calcium Matte Blue" keywords="Plainsman Cone 6 Ravenscrag Slip based glaze. It can be found among others at" id="55" date="2016-09-30" codenum="g2851H">
<recipeline material="Ravenscrag Slip" amount="55.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Whiting" amount="10.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Dolomite" amount="15.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Ferro Frit 3134" amount="10.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Silica" amount="10.000" unitabbr="g" conversion="0.0010" added="0"/>
<recipeline material="Cobalt Carbonate" 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="" descrip="Recipe page at"/>

By Tony Hansen

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