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These two variations of the recipe match fired shrinkages to the specifically named bodies (of course, they should fit any body having a similar fired shrinkage). For a zero-porosity porcelain (e.g. Grolleg), try increasing nepheline to 20 at the expense of ball clay.
Cone 10 Engobe for H550 White
Total:112.00
Notes *Both Zircopax and Black Stain are shown as additions. Use one or the other (to get white or black). Pictures Variations 1 - Black We normally use 10% black stain, but have tested lesser amounts down to 5%. Just use as much as you need to get the degree of black you want. Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Cone 10 Engobe for H550" keywords="White" id="136925" key="W56BSXCi" date="2024-09-02" codenum="L3954N"> <recipelines> <recipeline material="Nepheline Syenite" amount="10.000" tolerance=""/> <recipeline material="Silica" amount="20.000" tolerance=""/> <recipeline material="OM #4 Ball Clay" amount="60.000" tolerance=""/> <recipeline material="Bentonite" amount="2.000" tolerance=""/> <recipeline material="Zircopax" amount="10.000" added="true"/> <recipeline material="Mason 6600 Black Stain" amount="10.000" added="true"/> </recipelines> </recipe> </recipes> Born: 2016-12-12, Modified: 2024-09-02 04:28:23 |
Black Cone 10 Whiteware Engobe Recipe For Plainsman H570
Total:99.50 Notes *This is a variation on L3954N. This has a higher fired shrinkage to match more vitreous bodies (like Plainsman H570, P580 which have 0.5-1% fired porosity). However this does not shrink enough to match a vitreous Grolleg porcelain (like P700), more nepheline would be needed. Batch Ticket Notes Mixed 3000 grams powder. with 2380 water to get SG 1.47. Darvan 9.5g. Pictures H570 P6629 has no solubles, works with black slip L3954J engobe fit is perfect (as can be seen on the straight CLWC engobe compatibility test bars. G2571A on H450 with L3954J black engobe Fired at cone 10R. The black engobe has been applied inside and half way down the outsides. L3954J Engobe fit cone 10R Back to front: H450, H550, H570 and white version of same engobe L3954J and H are compatible The black stain is not changing the fired shrinkage. G2571A of black and brown L3954 engobe On H450 at cone 10R L3954 cone 10R engobe fired bars On P700 flakes inside, outside OK The shrinkage difference is not great enough for this dramatic result so the engobe is not forming a good bond with the porcelain. With P700 Pulls 11 toward the J on drying and then back straight on firing. That means the J needs less firing shrinkage, more drying shrinkage to work with P700. Testdata SHAB - Shrinkage/Absorption
EBCT - Engobe Body Compatibility Test
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Black Cone 10 Whiteware Engobe Recipe" keywords="For Plainsman H570" id="130962" key="eGZnJ1AS" date="2023-05-28" codenum="L3954J"> <recipelines> <recipeline material="Nepheline Syenite" amount="15.000" tolerance=""/> <recipeline material="Silica" amount="15.000" tolerance=""/> <recipeline material="Ball Clay" amount="57.000" tolerance=""/> <recipeline material="Bentonite" amount="2.500" tolerance=""/> <recipeline material="Mason 6600 Black" amount="10.000" added="true"/> </recipelines> </recipe> </recipes> Born: 2016-12-12, Modified: 2023-05-28 21:15:53 |
Variation of Recipe L3954N Cone 10 Engobe for H550
Code Number Extension L3954N - 1 Recipe Name Extension Black Base Recipe For This Variation
Total:102.00
Notes for this variation We normally use 10% black stain, but have tested lesser amounts down to 5%. Just use as much as you need to get the degree of black you want. Pictures Testdata SHAB - Shrinkage/Absorption
EBCT - Engobe Body Compatibility Test
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