Potters & Sculptors - Making Rock from Mud
Clay bodies left to right: stoneware 55, speckled brownstone, Ellen buff, porcelain
Glazes front to back:
folk art guild white, Zam celadon, C Harris Tenmoku, strontium crystal magic cool, strontium crystal magic warm, SH red orange
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Gracias Norm, meteré unas pastillas de prueba
According to the chemistry, spodumene has only 20% of the ceramic-flux, lithium oxide, contained in lithium carbonate. The extra material is the equivalent of kaolin and silica, so these two ingredients in the recipe should be reduced to keep the chemistry identical.
But in this recipe "Weathered Bronze Green" the glaze I made using spodumene looks only slightly different than a glaze made with the same weight of lithium carbonate or lithium fluoride.
Chemistry of / Componentes químicos de:
Según a la química, spodumene tiene sólo el 20% de la flujo-cerámica, óxido de litio, contenido en carbonato de litio. El material extra es el equivalente de caolín (kaolin) y sílice (silica), por lo que estos dos ingredientes de la receta se debe reducir para mantener la química idéntica. El carbonato de litio es refinado del mineral spodumene.
Pero, en esta receta "Degradado de Bronce Verde" "Weathered Bronze Green" el esmalte yo hecho usando spodumene ve sólo ligeramente diferente de un esmalte hecho con el mismo peso de carbonato de litio, o fluoruro de litio.
Lithium Carbonate, Spodumene, and Lithium Fluoride
Como se sustituye el carbonato de lithio por spedumene , es decir tengo spodumene , pero no tengo carbonato de litio , en mexico no venden litio pero si tengo spodumene ?
I will definitely look into those options! Thank you Juli!
I guess we could replace the barium with strontium carbonate or whiting on a molar weight in glaze cal. and reformulate. I'm not savvy with it though.
The folk art guild got a lot of ooooooohhs from my clients. I like the way it breaks. I love the looks of the Buckwheat, but the barium content is a concern. If it was my studio, I would make a batch in a heartbeat.
Good to see you got some tested. i plan to do some when it warms up here. The folk art guild looks pretty promising to me (had that one in mind).
juli
Low cost flat lapping disc can be used on you potters wheel if you, drill bat pin holes in it, and provide a trickle of water to cool it. At amazon.com, 120 grit for aggressive material removal. Click the image to purchase
Members have had great things to say about John Britt's new book, Mid-Range Glazes. Click the image to buy from Amazon.com
Purchase Glazes Cone 6 by Michael Bailey, The Potters Book of Glaze Recipes by Emmanuel Cooper, or Making Marks by Robin Hopper, all available at amazon.com. Mastering Cone 6 Glazes by John Hesselberth & Ron Roy is now out of print.
Harbor Freight is a great place to find unbeatable prices for better HVLP spray guns with stainless steel parts and serviceable economy models, as well as detail guns, all tested by our members for spraying glazes, as well as compressors to power the guns. As yet no one has tested and commented on the remarkably inexpensive air brushes at harbor freight.
The critter siphon gun is a spray alternative that is well liked by some of our members, and is available at amazon.
Amazon is also a competitive source for photo light tents for shooting professional quality pictures of your work. They also have the EZ Cube brand favored by several of our members. You might also want to purchase the book Photographing Arts, Crafts and Collectibles . . .
If you are up to creating videos of your work or techniques you might want to invest in a flip video camera
Following are a few scales useful for potters. Ohaus Triple Pro Mechanical Triple Beam Balance, 2610g x 0.1g, with Tare $169.00
And finally a low cost clone of the OHaus. The Adam Equipment TBB2610T Triple Beam Mechanical Balance With Tare Beam $99.62
ebay is a great alternative for many tools and the equipment used in the ceramics studio - kilns, wheels, extruders, slab rollers are often listed there both new and used.
If you just want to spout off, it is best accomplished as a blog posting. If you want to get more guidance and ideas from other members, ask a question as a new discussion topic. In the upper right corner of the lists for both types of posting, you will find an "+Add " button. Clicking it will open an editor where you create your posting. 4/16/2014
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