Share from Insight-live.com (Lab Documentation and Calculation System) by Digitalfire. https://digitalfire.com
See Also:
Zero3 Porcelain, engobe, glaze, firing schedule
L4170 Cone 04 Terra Cotta Casting Body, Glaze, Firing Schedule
Low expansion super white fritware body
Would you like to make translucent porcelain at terra cotta firing temperatures and use bright colored low fire glazes? Make this.
Project Name Zero4 Porcelain Project Codenumber UnAssigned Notes This project adjusts the Zero3 fritware porcelain to mature at cone 04 (instead of cone 03). Zero4 porcelain enables making translucent and ultra-strong ware at terra cotta and talc body temperatures. Like them, it can also be fired fast, very fast. Pictures Zero4 porcelain broken and cross section close-up The body is highly plastic and can be thrown very thin. At cone 04 this thin-walled mug did not warp even though it fired to a near-glasslike cross-section. The strength is amazing, it took about 30 hits with a hammer to break this mug, hitting it as hard as I dared without risking cutting the hand I was holding it with. The whiter flecks are agglomerates of New Zealand kaolin (because of improper mixing of the slurry). |
Zero4 Plastic Porcelain
Total:454,266.00 (R) Auto Unity Formula
Notes *Fantastic throwing, very thin walls. This should not be used when too soft or drying cracks will occur. Dry pieces evenly. Make ware having walls of even thickness. Pictures L3924J Zero4 Porcelain Use G1916Q and G3879C. Very similar. Zero4 porcelain cross section of mug Zero4 porcelain cross section 3924J1 Zero4 Porcelain at cone 04 left: G1916Q3 glaze L3924J Zero4 fired bars - vs. Polar Ice These Zero4 test bars (left) are fired from cone 02 (top) down to cone 06. These contain 0.06% Mason 6336 blue stain. The bars are on the right are Plainsman Polar Ice (fired from cone 8 down to 5). L3924J, L3924J1 Zero4 porcelain at cone 06, 04 L3924J uses New Zealand kaolin, L3924J1 uses Grolleg. A fritware body showcases even the small difference in iron these two have. L3924J and L3924K Cone 04 with clear glazes These bars are 3mm thick and the glaze was applied in three coats. Since the bodies fire very vitreous it is expected the bars should easily bend toward or away from the glaze if it is under tension or compression (as a result of mismatch in thermal expansions). However, the bars are straight and there is no crazing. L3924J Zero4 Casting translucency at cone 02 Untitled Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Zero4 Plastic Porcelain" id="212869" key="HkzPNo9B" date="2023-03-08" codenum="L3924J"> <recipelines> <recipeline material="New Zealand Kaolin" amount="200.000" tolerance="" unitabbr="KG"/> <recipeline material="Ferro Frit 3110" amount="325.000" tolerance="" unitabbr="LB"/> <recipeline material="Silica" amount="200.000" tolerance="" unitabbr="LB"/> <recipeline material="VeeGum T" amount="35.000" unitabbr="LB" added="true"/> <recipeline material="Mason 6336 Blue Stain" amount="250.000" unitabbr="GM" added="true"/> </recipelines> </recipe> </recipes> Born: 2014-09-19, Modified: 2023-03-08 13:20:00 |
Zero4 Casting Porcelain
Total:442,676.00 (R) Notes *The casting version only needs 1% veegum. Like the plastic version, NZK agglomerates. During initial testing we were unable to mix thoroughly enough to break them all up, this will be an issue for anyone: You must have a really good propeller mixer and make enough slurry in a big enough bucket that your mixer can run at full speed for an extended period. Even better, blender mixing will guarantee that all agglomerates are broken down. Pictures Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Zero4 Casting Porcelain" id="215896" key="sYua824N" date="2022-10-04" codenum="L3924L"> <recipelines> <recipeline material="New Zealand Kaolin" amount="200.000" tolerance="" unitabbr="KG"/> <recipeline material="Ferro Frit 3110" amount="325.000" tolerance="" unitabbr="LB"/> <recipeline material="Silica 45 micron" amount="200.000" tolerance="" unitabbr="LB"/> <recipeline material="VeeGum T" amount="10.000" unitabbr="LB" added="true"/> </recipelines> </recipe> </recipes> Born: 2014-09-19, Modified: 2022-10-04 13:04:13 |
G1916Q glaze + 10% silica
Total:114.00 Auto Unity Formula
Notes *This adds 10% 45-micron silica to the G1916Q cone 04 glaze recipe. The glaze has absorbed this 10% (as well as the 5% in G1916Q2) yet still melts just as well! This will certainly reduce the thermal expansion, Better yet, it increases the hardness and durability (the objective, we want to best glaze surface possible for Zero4 porcelain). Pictures G1916Q3 glaze on L4170B terra cotta at cone 04 After a several months this had not shivered or crazed. 3924J1 Zero4 Porcelain at cone 04 left: G1916Q3 glaze G1916Q3 on L215 at cone 04 - Shivering at rim Even with an addition of 10% silica it is just as glossy and runs when thick. However it is shivering on the rim of this mug, so the thermal expansion is too low for L215 (better to use G1916Q). M370 cone 6 vs cone 04 Clear glaze at cone 6: G2926B XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="G1916Q glaze + 10% silica" id="213847" key="hdmQdzh6" date="2022-11-24" codenum="G1916Q3"> <recipelines> <recipeline material="Ferro Frit 3195" amount="64.000" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="11.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="14.000" tolerance=""/> <recipeline material="New Zealand Kaolin" amount="15.000" tolerance=""/> <recipeline material="Silica" lookup="45 micron Silica" amount="10.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2014-03-04, Modified: 2022-11-24 20:29:50 |
G1916Q glaze + 5% silica
Total:106.00 Auto Unity Formula
Notes *This exchanges ball clay for kaolin in the standard G1916Q recipe (to lower the iron content for use on super white bodies). That means that slurry properties are not as good. That being said, NZK is very sticky and works well to suspend glazes. If needed, a little Veegum can be added. Pictures G1916Q2 On L215 and L210 at cone 06 Applied fairly thick, enough to run and collect at the base, yet still transparent. G1916Q2 On Zero4 porcelain at cone 04 G1916Q2 on L210, L215 at cone 04 The NZK is aglomerated because this was not screened. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="G1916Q glaze + 5% silica" id="213504" key="jaqyG21j" date="2022-05-26" codenum="G1916Q2"> <recipelines> <recipeline material="Ferro Frit 3195" amount="64.000" tolerance=""/> <recipeline material="Ferro Frit 3110" amount="11.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="14.000" tolerance=""/> <recipeline material="New Zealand Kaolin" amount="12.000" tolerance=""/> <recipeline material="Silica" lookup="45 micron Silica" amount="5.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2014-03-04, Modified: 2022-05-26 18:56:34 |