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GR6-H - Ravenscrag Cone 6 Oatmeal Matte

Modified: 2019-03-13 15:02:47

Plainsman Cone 6 Ravenscrag Slip glaze. See more at ravenscrag.com.

Material Amount
Ravenscrag Slip60.00
Calcined Alumina10.00
Dolomite10.00
Ferro Frit 313420.00
Added
Manganese Dioxide4.00
Rutile5.00
Illmenite Granular0.30
109.30

Notes

Note: For use as a straight glaze We are recommending GA6-F Alberta Slip oatmeal glaze instead, it looks better and has a better melt. Alberta Slip is already a stained material, so less colorants are needed to make darker colored glazes. Go the http://albertaslip.com.

However as a second layer over other more fluid melt glazes this can work well. Be sure not to put it on too thick.

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

Related Information

Ravenscrag oatmeal layered over black at cone 6

This is GR6-H Ravenscrag oatmeal over G1214M black on porcelain at cone 6 oxidation to create an oil-spot effect. Both were dipped quickly. You can find more detail at ravenscrag.com.

Ravenscrag Cone 6 GR6-H Oatmeal over 5x20 cone 6 black

The black recipe was made using G1214M with 5% Mason 6666 stain. The oatmeal overlayer is 50% the thickness of the black. The more fluid under-black comes through leaving islands and vertical rivulets of the stiffer oatmeal. Good control of the glazing process is needed to get consistent results using this approach.

Cone 6 black with a second layer of oatmeal glaze

The underglaze is G1214M cone 6 black (adds 5% Mason 6666 black stain). Overglaze left: GR6-H Ravenscrag Oatmeal. Overglaze right: GA6-F Alberta Slip oatmeal. Both produce a very pleasant silky matte texture (the right being the best). Both layers are fairly thin. In production it would be best to spray the second layer, keeping it as thin as possible. It is also necessary to adjust the ratio of raw to calcined Alberta or Ravenscrag Slips to establish a balance between drying hardness but not too much drying shrinkage (and resultant cracking).

GR6-H Ravenscrag Oatmeal glaze cone 6 oxidation.

An illmenite colored glaze (GR6-H) at cone 6 oxidation

GR6-H glaze at cone 5R on Plainsman M370 and M350

Links

Firing Schedules Plainsman Cone 6 Electric Standard
Used in the Plainsman lab to fire clay test bars in our small kilns
Recipes GA6-F - Alberta Slip Cone 6 Oatmeal
Plainsman Cone 6 Alberta Slip based glaze. It can be found among others at http://albertaslip.com.
Recipes GR6-A - Ravenscrag Cone 6 Clear Glossy Base
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.
Typecodes Medium Temperature Glaze Recipes
Normally fired at cone 5-7 in electric kilns.
Typecodes Ravenscrag Slip Recipes
Recipes based on Ravenscrag Slip from Plainsman Clays.

XML to Paste Into Desktop Insight

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By Tony Hansen


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