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These columns compare the original Alberta Slip cone 6 Frit 3134 base with versions using different Ferro and Fusion Frits. Each has advantages.
Oringal Alberta Slip Amber/Honey base
Total:100.00 Auto Unity Formula
Notes *Don't use this glaze anymore as a transparent honey, use GA6-B instead (it produces a better glass and is more durable by virtue of higher Al2O3 and SiO2 content). Pictures GA6A Alberta Slip base using Frit 3124, 3249 and 3195 The body is dark brown burning Plainsman M390 (cone 6). The amber colored glaze is 80% Alberta Slip (raw:calcine mix) with 20% of each frit. The white engobe on the inside of two of the mugs is L3954A (those mugs are glazed inside using transparent G2926B). The Alberta Slip amber gloss glaze produces an ultra-gloss surface of high quality on mugs 2 and 3 (Frit 3249 and 3195). On the outside we see it this glaze on the white slip until midway down, then on the bare red clay. The amber glaze on the first mug (with Frit 3124) has a pebbly surface that is not working nearly as well. These mugs are fired using a drop-and-soak firing schedule. GA6-A Alberta Slip Base with tin to prevent crystallization Left: L3820 (casting M390) with Ravenscrag Floating blue outside and Alberta Slip GA6-A inside. That inside glaze has 1% added tin, it prevents the crystals that that normally grow when this is slow cooled using the C6DHSC firing schedule (like the inside glaze on the right). These crystals can be very beautiful on decorative surfaces, but if you want a clear amber glass they are not good. GA6-A Alberta Slip base crazes on P300 Fired in a cool-and-soak firing. It is better to use GA6-B (which employ Frit 3195 instead of Frit 3134). Melted glaze for thermal expansion test has bubbled GA6-A glaze with four frits (flow tests) Four frits in GA6-A at cone 6 Frit 3195 (top left), 3134 (top right) Alberta Slip on P300 with Frits 3134, 3124, 3249, 3195 This porcelain can be difficult to fit glazes to because it has a lower-than-normal silica content. Each of these test samples was thermal shock tested: 300F to ice water. Typecodes ST-Untitled typecode Alternate Code Number:GA6-A XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Oringal Alberta Slip Amber/Honey base" id="70758" key="re2fk88b" date="2023-09-16" typecodes="ST" codenum="GA6-A" picturebasename=""> <recipelines> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Ferro Frit 3134" amount="20.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2007-03-09, Modified: 2023-09-16 16:22:37 |
Alberta Slip Original cone 6 base glaze
Total:102.00 Auto Unity Formula
Notes *Alta known as GA6-B at PlainsmanClays.com. Batch Ticket Notes Joe: Sept./2023 Pictures GA6-A base using Frit 3249 and 3195 on buff body The body is buff-burning Plainsman M340 (cone 6). The amber-colored glaze is 80% Alberta Slip (raw:calcine mix) with 20% of each frit. The inside of mug 1 is white engobed (L3954A) and with transparent over it (G2926B). GA6-B Alberta Slip base glaze does not crystallize Right: The traditional Alberta Slip amber transparent has 80% Alberta Slip and 20% Ferro Frit 3134. It forms micro-crystals if the kiln is not cooled quickly. The Frit 3195 version on the left retains its brilliant transparent nature. The reason is the higher levels of Al2O3 (Frit 3134 has almost zero Al2O3). M390 clay with white engobe inside L3954A engobe inside, clear glazed inside (G2926B). Outside is GA6B base (uses Frit 3195 instead of 3134). The result is a glossier more defect free glass. P300 with AlbertaSlip:Frit 3195 glaze fires crystal-free This glaze produces a flawless results with a normal free-fall cool cycle. But that is not what this was. In this cone 6 firing the temperature was dropped from 2200F to 2100F, held for 30 minutes, then dropped slowly (300F/hr) all the way down to 1400F. In that firing schedule the standard GA6-A base recipe would be completely covered in iron silicate crystals. M340 with L3954B engobe, GA6-B base glaze. Cone 6. GA6-B base Alberta Slip glaze on M340. Cone 6. No iron oxide added. GA6-B plus iron oxide Top: GA6-B Alberta Slip as a Celadon at cone 6 and 10R Left: Alberta Slip 80, Frit 3195 20. On Plainsman M370. GA6-B Base does not make rutile blue Left is the standard GA6-A with Frit 3134. GA6-B on the right has the rutile also, and was in the same firing, but the higher Al2O3 prevents its variegating action. G3903, L3500G, GA6-B on Coffee Clay (insides) C6DHSC firing Typecodes ST-Untitled typecode Alternate Code Number:GA6-B XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alberta Slip Original cone 6 base glaze" id="143991" key="rPbrknmE" date="2024-09-24" typecodes="ST" codenum="L3500" picturebasename=""> <recipelines> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Ferro Frit 3195" amount="20.000" tolerance=""/> <recipeline material="Red Iron Oxide" amount="2.000" added="true"/> </recipelines> </recipe> </recipes> Born: 2007-03-09, Modified: 2024-09-24 19:32:49 |
Alberta Slip + Frit 3249
Total:102.00 Auto Unity Formula
Notes *This is part of a program to compare the results of fluxing Alberta Slip for cone 6 using 4 different frits (3134, 3124, 3195 and 3249). Pictures P6851 M332 with L3500G AltaSlip 3249 base inside P6823 M350 with L3500G AltaSlip 3249 base inside GA6-C outside, slow cool firing. L4115J3S cone 6 - L3500G Alberta Slip glaze L4115J3S is a Plainsman 3D-based speckled stoneware. It is vitreous and very functional. L3500G with Frit 3249, F69 Identical. The F69 may have slight smoother surface. G3903, L3500G, GA6-B on Coffee Clay (insides) C6DHSC firing Typecodes ST-Untitled typecode Alternate Code Number:GA6-A XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alberta Slip + Frit 3249" id="193133" key="ERW7E9Hf" date="2023-09-16" typecodes="ST" codenum="L3500G" picturebasename=""> <recipelines> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="20.000" tolerance=""/> <recipeline material="Red Iron Oxide " amount="2.000" added="true"/> </recipelines> </recipe> </recipes> Born: 2007-03-09, Modified: 2023-09-16 16:20:54 |
Alberta Slip + Frit 3249 and Silica
Total:112.00 Auto Unity Formula
Notes *Could this to make a more durable surface. The Frit 3249 version melts the best and the more silica it will take, yet still melt well, the harder and more durable the surface should be be. That being said, the surface is not as smooth as expected, this is too much silica. Pictures L3500H drop-and-soak firing, appears to need slow cool L3500H cone 6 slow cool is much more glassy This is the C6DHSC schedule. L3500H on the insides of a buff and dark stoneware Although well melted at cone 5, it is not glassy smooth as normal with the C5DHSC firing schedule. L3500G and L3500H melt fluidity test to cone 6 The extra 10% silica has this effect on the melt flow. Typical functional glazes would be similar to the H (e.g. G2926B or G2934). Typecodes ST-Untitled typecode Alternate Code Number:GA6-A XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alberta Slip + Frit 3249 and Silica" id="213844" key="rmJw3Lqt" date="2023-03-06" typecodes="ST" codenum="L3500H" picturebasename=""> <recipelines> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="20.000" tolerance=""/> <recipeline material="Silica" lookup="45 micron silica" amount="10.000" tolerance=""/> <recipeline material="Red Iron Oxide " amount="2.000" added="true"/> </recipelines> </recipe> </recipes> Born: 2007-03-09, Modified: 2023-03-06 14:30:12 |
Alberta Slip + Frit FZ-16
Total:100.00 Auto Unity Formula
Notes *This version of the Alberta Slip base honey glaze melts the best. It works well down to cone 4. It produces an incredibly glossy surface (pieces will slide out of your hands easily if you do not hang on to them firmly, tiles cannot be stacked because they will slide off each other). Pictures GA6-A vs G3903 using FZ-16 frit at cone 6 Incredible result. Super fluid. No dimples or bubbles compared to the GA6-B on the left. G3903 on P300, M340, M390 Fantastic result. Super glossy. These tiles are very slippery, cannot stack them on top of each other! G3903, L3500G, GA6-B on Coffee Clay (insides) C6DHSC firing G3903 the super glossy at cone 4 This is among the glossiest surfaces we have seen. This inside surface of this bowl is so slippery that contents will slide out unless proper care is taken! P6954 M325 with G3903 outside at cone 4 DS firing Insides: P6954, L4483B, G3903, G2917, G3936 Cone 5 SC The glossy transparent Glaze might not be ideal for slow cool. Typecodes ST-Untitled typecode Alternate Code Number:GA6-A XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alberta Slip + Frit FZ-16" id="180298" key="L4MKv5Rv" date="2021-12-13" typecodes="ST" codenum="G3903" picturebasename=""> <recipelines> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Fusion Frit FZ16" amount="20.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2007-03-09, Modified: 2021-12-13 15:46:03 |