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G3806 Cone 6 Fluid Melt Clear Glaze Project 2015 - Stage 2 (Adjust Panama Blue)
Cone 6 Fluid Melt Glaze Project 2015 - Stage 1 - Compare Popular Recipes
This continues the development of G3806C fluid melt cone 6 clear glaze for electric firing. The result is a melt-fluidity-adjustable clear base of very low thermal expansion. Add stains, opacifiers, variegators for stunning glazes!
Project Name Continued Development of High Melt Fluidity Clear Project Codenumber UnAssigned Notes This overview was updated July 21, 2022, it has new insights. |
Panama Cone 6 Adjustment 2015 High fluid melt glaze for reactive effects and super gloss colors
Total:104.60 Auto Unity Formula
Notes *This is work I did in 2015 (in 2019 a much bigger project developed this further). Pictures Copper Blue G8306C using copper carbonate, oxide Right is G3806C, an adjustment to drop the thermal expansion of B. It does this by trading some of the high-expansion KNaO for a mix of MgO, ZnO and SrO. These is an improvement but it still could craze over time on high-kaolin or low silica porcelains. Plainsman P300, M370 with copper blue glaze cone 6 This is the G3906C base plus 2.5% tin oxide and 2% copper oxide. The green glaze does craze over time on these bodies, but the inside glaze is a liner than will not. 3806C vs. other cone 6 clear glazes on a dark stoneware Each pair of mugs shows a numbered glaze vs. G3806C on the right. The body is a red burning cone 6 stoneware, Plainsman M390. G2926B, 3806C vs. Amaco C11 Clear at cone 6 Bottom right is P300 with three coats of C11. G3806C Copper Blue on Polar Ice Polar Ice is the easiest of Plainsman middle fire porcelains to fit a glaze to, although this glaze crazes on most other porcelains, it should stay craze free on this. G3806C on a dark burning cone 6 stoneware Plainsman M390. There is still some clouding, but it is better than other transparents we have used. G3806D melt flow test Left is G3806C with copper oxide 2%. Right is G3806D with copper carbonate 2%. The melt fluidity is identical. The blue color thus seems to depend on the carbonate (or a lower percentage of the oxide is needed). Variations 1 - Midnight Fire fast to 2100F (300-400F/hr), then 100F/hr to 2200F, then drop fast to 2000F and soak half hour, then cool at 100F/hr to 1400F. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Panama Cone 6 Adjustment 2015" keywords="High fluid melt glaze for reactive effects and super gloss colors" id="75786" key="tRF2Cy5s" date="2024-07-24" codenum="G3806C" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="26.300" tolerance=""/> <recipeline material="Kaolin" amount="19.700" tolerance=""/> <recipeline material="Dolomite" amount="8.700" tolerance=""/> <recipeline material="Strontium Carbonate" amount="4.400" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="31.100" tolerance=""/> <recipeline material="Ferro Frit 3134" amount="6.600" tolerance=""/> <recipeline material="Zinc Oxide" amount="3.300" tolerance=""/> <recipeline material="Copper Oxide" amount="2.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2024-07-24 17:59:11 |
Panama c6 - Lower COE #1
Total:104.60 Auto Unity Formula
Notes *The first adjustment to G3806C, the recipe I have used by some years. I have reduced KNaO and raised Li2O to compensate (Li2O is a powerful flux and has very low expansion). The method to accomplish this is novel. Pictures G2806D (with copper carbonate) on M340 at cone 6 G3806D melt flow test Left is G3806C with copper oxide 2%. Right is G3806D with copper carbonate 2%. The melt fluidity is identical. The blue color thus seems to depend on the carbonate (or a lower percentage of the oxide is needed). G3806D with 2% Copper Carb (left), 2% Copper Ox (right) G3806C and D - both using Copper Oxide at 2% G3806D on M340, Polar Ice at cone 6 G3806D on M340, M390 at cone 6 This is the copper oxide version. Clockwise: G3806C,D,E,F on M370 F is more fluid, thus highlights contours better. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Panama c6 - Lower COE #1" id="157007" key="ouSR13Lz" date="2024-01-18" codenum="G3806D" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="26.300" tolerance=""/> <recipeline material="Wollastonite" amount="4.000" tolerance=""/> <recipeline material="Kaolin" amount="15.700" tolerance=""/> <recipeline material="Dolomite" amount="5.700" tolerance=""/> <recipeline material="Strontium Carbonate" amount="4.400" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="29.100" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="5.600" tolerance=""/> <recipeline material="Zinc Oxide" amount="3.300" tolerance=""/> <recipeline material="Spodumene" amount="6.000" tolerance=""/> <recipeline material="Copper Carbonate" amount="2.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2024-01-18 19:45:42 |
Panama c6 - Lower COE #2
Total:106.50 Auto Unity Formula
Notes *This takes the calculated COE even lower (6.9 of G3806D to 6.3). I have increased Li2O, MgO at the expense of KNaO and CaO. Pictures G3806E on Polar Ice - Cone 6 I think you will agree, this is stunning! And the melt fluidity is about right: I have it on pretty thick and yet it has not run on to the kiln shelf. Can you imagine what this is going to look like when I replace the copper with red stain! Clockwise: G3806C,D,E,F on M370 F is more fluid, thus highlights contours better. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Panama c6 - Lower COE #2" id="157465" key="P5BGx11Q" date="2022-08-30" codenum="G3806E" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="32.000" tolerance=""/> <recipeline material="Spodumene" amount="11.000" tolerance=""/> <recipeline material="Zinc Oxide" amount="3.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="6.000" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="22.000" tolerance=""/> <recipeline material="Strontium Carbonate" amount="5.000" tolerance=""/> <recipeline material="Kaolin" amount="11.000" tolerance=""/> <recipeline material="Bentonite" amount="2.000" tolerance=""/> <recipeline material="Dolomite" amount="8.000" tolerance=""/> <recipeline material="Copper Oxide" amount="4.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2022-08-30 07:38:11 |
Panama c6 - Lower COE #3
Total:106.50 Auto Unity Formula
Notes *This version tests a new concept: Introduce more B2O3 (tripling the amount), boron is a glass super-melter. The downside is more bubbling and more frit is needed, that increases the price. But is also means that less Li2O might be needed. Pictures G3806E and F Flow Test F is flowing better than any previous, likely because of the higher boron. This will permit adding silica, which will lower thermal expansion even more. Clockwise: G3806C,D,E,F on M370 F is more fluid, thus highlights contours better. G3806E (left), G3806F (right) E uses 4% copper oxide, F 4% copper carbonante. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Panama c6 - Lower COE #3" id="157668" key="SontnzSk" date="2022-07-21" codenum="G3806F" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="23.500" tolerance=""/> <recipeline material="Wollastonite" amount="7.000" tolerance=""/> <recipeline material="Kaolin" amount="10.000" tolerance=""/> <recipeline material="Strontium Carbonate" amount="5.000" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="22.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="21.000" tolerance=""/> <recipeline material="Zinc Oxide" amount="3.000" tolerance=""/> <recipeline material="Spodumene" amount="6.000" tolerance=""/> <recipeline material="Bentonite" amount="2.500"/> <recipeline material="Copper Carbonate" amount="4.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2022-07-21 18:36:56 |
Panama c6 - Lower COE #7
Total:106.50 Auto Unity Formula
Notes *This version makes a bold change: Doubling the B2O3. And raises the SiO2 somewhat. Pictures G3806K on M370, Coffee clay Crystal clear, running nicely. G3806K ball pool - some bubbles Now that is melt fluidity! G3806K with and without copper This is clearly running much better than any previous. Much fewer bubbles. Even some crystallization on lower flow. More Al2O3 will reduce that. G3806K on Polar Ice - really running It is pooled in the bottom of the mug. Polar Ice. G3806K on coffee clay XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Panama c6 - Lower COE #7" id="158673" key="jmjoSENc" date="2019-08-08" codenum="G3806K" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="21.500" tolerance=""/> <recipeline material="Bentonite" amount="2.000" tolerance=""/> <recipeline material="Kaolin" amount="7.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="17.000" tolerance=""/> <recipeline material="Zinc Oxide" amount="2.500" tolerance=""/> <recipeline material="Fusion Frit F-493" amount="7.500" tolerance=""/> <recipeline material="Fusion Frit F-524" amount="42.500" tolerance=""/> <recipeline material="Copper Carbonate" amount="4.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2019-08-08 14:36:32 |
C6 Fluid Clear Final Recipe #10
Total:107.50 RO Unity Formula
Notes *In an intervening step I increased the Al2O3 from .38 to .45. It this one to 0.54 (almost double the amount of Al2O3 from G3806C). Yet it maintains fluidity. And SiO2 is 25% higher! And the thermal expansion calculates to an incredible 5.8 (compared to the original Panama blue which was 7.7)! Pictures Lemon slice test on G3806N Left this for 24 hours. Wrapped up in stretch wrap. G3806N P300 mug This withstands a 325F to ice water test without crazing on P300, a very difficult-to-fit-glazes-to body. G3806N on M370, M340, M390, Coffee Cone 6 drop and soak, slow cool firing. G3806N flow test G2934Y, G2926B, G3806N on L4197 Slow cool. Cone 6. Sitting for three weeks. G2934Y, G2926B, G3806N on L4198 Cone 6. Slow cool. Sitting for 3 weeks. G2926B, G2934Y on L4199 Cone 6 slow cool. Sitting for 3 weeks. G2934Y, G2926B, G3806N on L4200 Cone 6 slow cool. Sitting for 3 weeks. G2934Y, G2926B, G3806N on L4201 Cone 6 slow cool. Sitting for about 3 weeks. G2934Y, G2926B, G3806N on L4202 Cone 6, slow cool. Sitting for 3 weeks. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="C6 Fluid Clear Final Recipe #10" id="159060" key="DP9qbCjy" date="2022-07-08" codenum="G3806N" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="17.500" tolerance=""/> <recipeline material="Bentonite" amount="1.000" tolerance=""/> <recipeline material="Kaolin" amount="17.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="16.000" tolerance=""/> <recipeline material="Zinc Oxide" amount="2.500" tolerance=""/> <recipeline material="Fusion Frit F-524" amount="40.000" tolerance=""/> <recipeline material="Fusion Frit F-493" amount="7.000" tolerance=""/> <recipeline material="Black Copper Oxide" amount="4.000" added="true"/> <recipeline material="Tin Oxide" amount="2.500" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2022-07-08 18:16:12 |
G3806N1 + 2% Zircopax
*Missing units are assumed to be R Total:102.00 (R) Auto Unity Formula
Notes *Switched to Fusion Frit F-69 for MgO. Pictures G3806N1 flow tests - Tin vs. Zircon Flow test and test tile (P300 P6805) fired C6DHSC schedule. Flow test balls 9 grams. C6DHSC firing schedule stain additions at 10%, zircopax at 2% PLC6DS Tiles are P300 stain additions at 10%, zircopax at 2% PLC6DS Tiles are P300 3% tin oxide addition, no zircopax Tile is P300 Tile is Polar Ice Stains were brus Tile is Polar Ice C6DHSC (slow cool) Joe: Stain and glaze combinations are the same as previous test photos, included with tile of 3% tin oxide and tile of base glaze with no zircopax addition. Tiles are P300 clay. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="G3806N1 + 2% Zircopax" id="176749" key="RbdQRR2t" date="2020-06-22" codenum="L4273" email="untdkm@sasktel.net"> <recipelines> <recipeline material="Silica" amount="18.500" tolerance=""/> <recipeline material="Kaolin" amount="15.500" tolerance=""/> <recipeline material="Fusion Frit F-69" amount="17.000" tolerance=""/> <recipeline material="Zinc Oxide" amount="2.000" tolerance=""/> <recipeline material="Fusion Frit F-524" amount="36.000" tolerance=""/> <recipeline material="Fusion Frit F-493" amount="6.500" tolerance=""/> <recipeline material="Wollastonite" amount="1.500" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="3.000" tolerance=""/> <recipeline material="Zircopax" amount="2.000" unitabbr="GM" added="true"/> </recipelines> </recipe> </recipes> Born: 2015-06-02, Modified: 2020-06-22 15:36:12 |