Potters & Sculptors - Making Rock from Mud
G200Changes.pdf You will have to change all your recipes when existing stocks run out. Currently a potash spar is mixed 70:30 with a soda spar. The new formulation will just contain the potash spar. Read the linked pdf from Standard Ceramic Supply.
An introduction to ceramic materials and how they combine in different proportions to form either glazes or clay bodies.
Charts of materials composition to aid glaze formulation and modifications.
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I've searched but haven't yet found a definitive answer to this question: Is there a food-safe turquoise glaze? I know that Opulence sells a food-safe one (both dry and liquid), but I'd like a recipe for one. Thanks for any help.
I have been having an issue with an older glaze when I brush or pour it on my bisque ware. Pete's Weathered Blue is the glaze in question - as it drys, it cracks and easily pops off the clay surface. Any idea why?
WEATHERED BLUE
This is a true weathered looking glaze from Pete Pinnell.
Nepheline Syenite 40.0%
Dolomite 2.0%
Bone Ash 6.0%
Lithium Carbonate 4.0%
ADD:
Zinc Oxide 4.0%
Copper Carbonate 2.0%
Cobalt Carbonate 0.25%
Bentonite 2.0%
I Just learned about, Ravenscrag Slip, from a post here. I Google it to their website. I love the cone 6 glazes. I have to try these. I am new to making glazes, but I need to cut cost and create a pop for my pottery. Thanks for sharing.
I'm excited to be a new member of Cone 6 Electric. Learning how to navigate the website and wonder where the recipes for the glazes in the Sankey Glaze Database are? All I get are comments regarding each glaze, no recipe, no picture. HELP!
I just ordered some of the more expensive colorants and materials from uspigment.com. If you mix glazes, might want to check these prices.
1 lb cobalt oxide - 35.00
3 lbs copper carbonate (@7) - 21.00
3 lbs lithium carbonate (@9)- 27.00
1 lb tin oxide - 22
2 lb calcined zinc oxide (@5.50) 11.00
3 lb yellow ocher (@2.50) - 7.50
Total - $123.50 not including shipping. This order shipped for $13
Looking for unusual glazes from Ravenscrag Slip
Hi Louden
I took a Steven Hill day workshop in March and had his handout for glaze recipe
SH Copper Ash
Dolomite 2.8
Whiting 32.5
EPK 24.7
Flint 6.0
Alberta Slip 19.1
Frit 3124 14.9
________________
100.00
Bentonite 2.0
Copper Carbonate 5.6
I am currently mixing up some of Steven Hill's glazes. I have run out of EPK and am wondering if I might be able to substitute #6 Tile clay. Some years back my clay supplier suggested making the change and that it would not make a difference. I checked the Clayart archives and both Ron Roy and Vince Pitelka left replies to someone that they are virtually the same.
I do not want to mix up the 13 glazes w/ #6 Tile clay and have problems...would rather wait until Monday and make a road trip to buy the EPK.
Thank you.
O'Brien
Ann, the clear gloss has no toxic properties as a base glaze, and is durable enough that it should not release harmful amounts of the metal oxide colorants that you might add in normal percentages. The only way to know beyond a shadow of a doubt, is to submit small cups to a testing lab for leach testing. This subject is covered in a number of places on our network. To learn more type "food safe" into the search box at the upper right corner of all of our pages.
Just reading this discussion. Ann, George recommended this clear glaze to me and i find it to be wonderful. A 'no fail' clear glaze. I have brushed it on, dipped it, sprayed it. Added oxides to it. I love it. I have also used it for 'Single Firing' and it works brilliantly!
Ann Griffin,
Regarding your recipe conversion from low fire to cone 6. Too many things change over a 400 degree temperature differential between cone 06 and cone 6. It's hard enough to try to adjust a cone 10 recipe 100 degrees down to cone 6. The task you propose is really not feasible. I'm going to guess that you are looking for a gloss. I suggest you try this CLEAR GLOSS with the same additions you had in your glaze.
Looking for a couple of recipes if you may be so inclined to share..
I need a med. to dk. pink glaze recipe for spraying and a nice
Celedon. Celedon can be shiny or matte..
Thanks in advance.. ~
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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