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Leach's Satin Clear Original
Total:100.00 Auto Unity Formula
Notes *This is crazing on Laguna B-mix. Neither the clay or glaze are at fault, they are simply incompatible. Still, 20% feldspar sourcing lots of KNaO plus extra KNaO coming from a frit certainly makes crazing less than a surprise for this glaze. Pictures URLs A good adjustable base matte recipe XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Leach&#039;s Satin Clear Original" id="61955" key="XvGfEnpk" date="2019-05-31" codenum="G2941A" email="j_johnsrud@hotmail.com"> <recipelines> <recipeline material="Custer Feldspar" amount="21.700" tolerance=""/> <recipeline material="Whiting" amount="21.700" tolerance=""/> <recipeline material="Silica" amount="21.700" tolerance=""/> <recipeline material="EPK" amount="21.700" tolerance=""/> <recipeline material="Ferro Frit 3124" amount="13.200" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2014-10-14, Modified: 2019-05-31 12:14:43 |
Leach's Satin Clear - Craze fix
Total:100.00 Auto Unity Formula
Notes *This recipe is the product of tweaking in my Insight-live.com account. My objective was to introduce MgO (very low thermal expansion oxide) at the expense of KNaO (very high expansion). Pictures Leach's Clear crazing adjustment This substitutes MgO for some of the CaO and KNaO. It also adds a little more B2O3 for better melting. This melts just as good or better and appears to have about the same surface gloss. It would be a little more matte by raising the Al2O3, this would drive the expansion down even further. Leach's clear and craze adjustment 3mm thick x 15mm square samples fired on a porcelain tile. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Leach&#039;s Satin Clear - Craze fix" id="61966" key="yAAiALfs" date="2019-05-31" codenum="G2941C" email="j_johnsrud@hotmail.com"> <recipelines> <recipeline material="Custer Feldspar" amount="21.485" tolerance=""/> <recipeline material="Whiting" amount="21.485" tolerance=""/> <recipeline material="Silica" amount="22.475" tolerance=""/> <recipeline material="EPK" amount="21.485" tolerance=""/> <recipeline material="Ferro Frit 3124" amount="5.149" tolerance=""/> <recipeline material="Ferro Frit 3249" amount="7.921" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2014-10-16, Modified: 2019-05-31 12:12:23 |
Cone 6 Magnesia Matte Base
Total:102.06
Notes *This matte recipe was developed at Plainsman Clays. It descends from a high-dolomite recipe that was originally used to compare shipments of dolomite for consistency. In our standard firings this recipe produces both good mattenss and a very functional surface coupled with very low chance of crazing. It is not as interesting as reactive mattes but this is better for functional and durable surfaces. This is also adjustable, the degree of matteness can be controlled by blending in a glossy. Pictures G2934 with Hemlock Green, Pansy Purle Stains 10 gram balls have been melt down onto a tile at cone 6. True mattes should still be matte if overfired The G2934 is a high-MgO matte, it melts well and does not cutlery mark or stain easily. As evidence that it is a true matte, notice that it is still matte when fired to cone 7 or 8. VC71, while having a similar pleasant silky matte surface at cone 6, converts to a glossy if fired higher (suggesting that its cone 6 matteness is due to incomplete melting). For the same reason the VC71, it is whiter in color (but as soon as it begins to melt and have depth the color darkens). G2934 + 5% Titanium thinner/thicker on M390 Incredible cone 6 speckle body with G2934 matte glazes This clay, L4115J3S, a Plainsman 3D-based body, fires vitreous and dense, yet there is no hint of bloating. With these matte glazes very durable and functional pieces are produced. Melt flow comparison: G2934 with Frit 3124, Frit F-19 Fusion Frit F-19 is giving a more fluid melt. The difference cooling-rate makes These are the G2934 black glaze at cone 6. The piece on the left was fired using the C6DHSC firing schedule (drop-and-hold at 2100F then 150F/hr to 1400F). The one on the right was fired using the PLC6DS schedule (drop-and-hold at 2100F then free-fall from there). The slow cool gives the glaze on the left time to crystallize, creating a stony matte. G2934 Cone 6 Matte + 4% iron oxide URLs Prepared public do..om Plainsman Clays Typecodes C6-Cone 6 Glazes Alternate Code Number:MG6CDM XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Cone 6 Magnesia Matte Base" id="56852" key="aKCWGtFz" date="2024-03-08" typecodes="C6" codenum="G2934" picturebasename=""> <recipelines> <recipeline material="Ferro Frit 3124" amount="19.400" tolerance=""/> <recipeline material="EPK" amount="18.300" tolerance=""/> <recipeline material="Dolomite" amount="23.500" tolerance=""/> <recipeline material="Silica" amount="26.960" tolerance=""/> <recipeline material="Calcined Kaolin" amount="13.900" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2014-03-21, Modified: 2024-03-08 20:40:00 |
Cone 6 Calcium Matte v2
Total:101.00 Auto Unity Formula
Notes *This is an adjustment to the original G1214Z recipe. The chemistry of this is the same, but the 37 raw kaolin in the original has been split to a combination of raw:calcined kaolin to reduce drying shrinkage (preventing cracking as it dries and crawling during firing). If unavailable, you can make your own calcined kaolin by roasting the powder in a container in a bisque firing. Pictures 3 opacifiers on Coffee Clay, M390 in G1214Z G1214Z2 on M340, M390 at cone 6 G1214Z at cone 6 with 10% Zircopax and 5% tin oxide The body is Plainsman M390. The firing schedule is Plainsman PLC6DS. The tin is on the right. Alternate Code Number:GS6-B XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Cone 6 Calcium Matte v2" id="156545" key="YvTMjXPD" date="2023-06-19" codenum="G1214Z1" picturebasename=""> <recipelines> <recipeline material="Wollastonite" amount="27.000" tolerance=""/> <recipeline material="Ferro Frit 3124" amount="36.000" tolerance=""/> <recipeline material="EPK" amount="20.000" tolerance=""/> <recipeline material="Silica" amount="5.000" tolerance=""/> <recipeline material="Calcined Kaolin" amount="13.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 1998-04-21, Modified: 2023-06-19 19:38:59 |