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Cone 6 Grolleg translucent porcelain for throwing, casting, 3D printing
Develop and maintain the recipe of your own super-white translucent porcelain body. Or compromise whiteness for workability and cost with an alternate recipe.
Project Name Dialing the desired plasticity in four cone 6 porcelains Project Codenumber UnAssigned Notes White porcelains are made from kaolin, feldspar and silica. Super-white porcelains employ expensive, low titanium, low plasticity kaolins (e.g. Grolleg, New Zealand) and thus require the help of white-burning bentonites like Veegum (3-5% in throwing bodies, ~1% in casting bodies). Ivory porcelains employ cheaper, but more plastic kaolins and can tolerate a less expensive bentonite. White stonewares employ a mix of kaolin and ball clay (to mix with the feldspar and silica). URLs Every potter needs a plaster table |
Cone 6 Translucent Grolleg Casting
Total:100.00 Notes *Because this employs Grolleg kaolin, it fires much whiter than bodies made using North American kaolins. And it will be more vitreous. Pictures L3778G cone 6 Grolleg casting body vs. others ![]() Top is this body. L3778G Grolleg cone 6 casting ![]() The glaze is GA6-B. The body fires extremely white and dense, producing stunning pieces. It is porous at bisque state and it is easy to get glazes on too thick. L3778G with GA6-B glaze fired at cone 6 ![]() Fired strength is very good (under the hammer). Rather than shatter, it simply broke cleanly into to pieces. L3778G Cone 6 Translucent Grolleg Casting fired bars ![]() L3778G vs Polar Ice - Fired bars ![]() Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Cone 6 Translucent Grolleg Casting" id="184767" key="7d5CXcGD" date="2022-01-15" codenum="L3778G" location="BOX53"> <recipelines> <recipeline material="Grolleg Kaolin" amount="44.000" tolerance=""/> <recipeline material="Silica" amount="25.000" tolerance=""/> <recipeline material="Nepheline Syenite" amount="30.000" tolerance=""/> <recipeline material="VeeGum" amount="1.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2015-03-06, Modified: 2022-01-15 21:47:17 |
P300 Cone 6 Casting Body
Total:603,277.60 (R) Notes *P300 is a cone 6 plastic kaolin-only porcelain made by Plainsman Clays. This is a casting version of it. This recipe employs Pioneer Kaolin instead of #6 Tile, this only needs 1% bentonite (instead of 5% for the plastic version) and the Nepheline here has been adjusted to fine tune the maturity. Pictures G2926B after 300F:Icewater test 300:370 ![]() On P300 test mix (made with Pioneer kaolin, left), 370 next recipes. Neither crazed on the sidewalls. But P300 crazed on the bottom (as shown). P300 using Pioneer kaolin - mug bottom ![]() P6346 vs. L3906 Lab test with PIoneer P300s ![]() P6346 P300 vs L3906 P300 test bars ![]() G2926b clear not crazed after two weeks ![]() L3906 P300 Using Pioneer Kaolin fired bars ![]() Alternate Code Number:L3771J Testdata SHAB - Shrinkage/Absorption
LDW - LOI/Density/Water Content
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="P300 Cone 6 Casting Body" id="92896" key="D92CBcRf" date="2020-10-06" codenum="L3906" picturebasename=""> <recipelines> <recipeline material="Pioneer Kaolin" amount="12.000" tolerance="" unitabbr="50BG"/> <recipeline material="Nepheline Syenite" amount="7.000" tolerance="" unitabbr="50BG"/> <recipeline material="Silica" amount="7.000" tolerance="" unitabbr="50BG"/> <recipeline material="Talc" amount="18.000" tolerance="" unitabbr="LBS"/> <recipeline material="Bentonite" amount="12.000" unitabbr="LBS" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-03-07, Modified: 2020-10-06 12:52:43 |
M370 Cone 6 Casting Body
Total:453,592.00 (R) Notes *M370 is a plastic throwing kaolin/ball clay porcelain made by Plainsman Clays. This is a casting version of it (this has no bentonite whereas the plastic version has about 4%). This recipe employs Pioneer Kaolin instead of #6 Tile (to make it easier to deflocculate and cast and release faster). Pictures G2926J1 vs. G2926B on M370F casting ![]() Very good results. L4217F casting porcelain fired at cone 6 ![]() Clear glaze G2926J1. Fired color is not as white as a kaolin-only porcelain (e.g. L3906) but this is faster to cast because the recipe does not need bentonite. L4217F fired bars ![]() Typecodes MAS-Master Ticket Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="M370 Cone 6 Casting Body" id="163116" key="FjhX4ZgK" date="2021-07-03" typecodes="MAS" codenum="L4217F" picturebasename=""> <recipelines> <recipeline material="Pioneer Kaolin" amount="2.000" tolerance="" unitabbr="50BG"/> <recipeline material="Silica" amount="5.000" tolerance="" unitabbr="50BG"/> <recipeline material="M-23 Ball Clay" amount="5.000" tolerance="" unitabbr="50BG"/> <recipeline material="Nepheline Syenite" amount="6.000" tolerance="" unitabbr="50BG"/> <recipeline material="Kaopaque" amount="2.000" tolerance="" unitabbr="50BG"/> </recipelines> </recipe> </recipes> Born: 2012-11-29, Modified: 2021-07-03 15:27:42 |
M370 Cone 6 Casting Body
Total:453,592.00 (R) Notes *This recipe improves casting properties of L4217F by using a larger particle size ball clay. And it uses pure Pioneer kaolin (rather than a mix of two kaolins). It is a little more vitreous also. But still could be better. Consider adding 1% talc to reduce the porosity to 1% at cone 6. Pictures L4217G, L3798G2, L3778G fired bars ![]() Fired from cone 8 to 4 (top to bottom). Typecodes MAS-Master Ticket Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="M370 Cone 6 Casting Body" id="184780" key="1eFz4aRj" date="2022-11-19" typecodes="MAS" codenum="L4217G" picturebasename=""> <recipelines> <recipeline material="Pioneer Kaolin" amount="4.000" tolerance="" unitabbr="50BG"/> <recipeline material="Silica" amount="5.000" tolerance="" unitabbr="50BG"/> <recipeline material="KT1-4 Ball Clay" amount="5.000" tolerance="" unitabbr="50BG"/> <recipeline material="Nepheline Syenite" amount="6.000" tolerance="" unitabbr="50BG"/> </recipelines> </recipe> </recipes> Born: 2012-11-29, Modified: 2022-11-19 19:49:35 |