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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.
| Material | Amount | Percent | *Stat | |
| Ravenscrag Slip | 60.0 | 56.1% | ||
| Ferro Frit 3134 | 20.0 | 18.7% | ||
| Dolomite | 10.0 | 9.3% | ||
| Calcined Alumina | 10.0 | 9.3% | ||
| Cobalt Oxide | 2.0 | 1.9% | c | |
| Rutile Ceramic | 5.0 | 4.7% | v | |
| 107.00 | ||||
| Rate (F) | Temp (F) | Hold (Min) | Step |
| 100 | 250 | 60 | 1 |
| 3500 | 2100 | 0 | 2 |
| 108 | 2200 | 10 | 3 |
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.
Ravenscrag glaze on Plainsman M340
Out Bound Links
Used in the Plainsman lab to fire clay test bars in our small kilns
This Plainsman Cone 6 Ravenscrag Slip base is just the pure material with 20% added frit to make it melt to a glossy natural clear.
2003-07-21 - This is the base cone 6 Ravenscrag recipe, it fires as a transparent glossy. It has an addition of the most common North American borate frit, enough ...
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<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"/>
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By Tony Hansen
