Archie's Stoneware Glazes


MBG034 Archie's Base	MGG028 Blue Purple	MGB056 Eggplant	MBG026 Gun Metal Green	MBG058 Ice Blue	MBG055 Opal
Pint $9.00 Gallon $43.20	Pint $9.60 Gallon $47.50	Pint $9.90 Gallon $49.80	Pint $9.60 Gallon $48.00	Pint $9.70 Gallon $48.30	Pint $9.10 Gallon $43.00


MBG031 Red Gold	MBG057 Rhubarb
Pint $9.20 Gallon $44.30	Pint $12.50 Gallon $71.40


Prices Subject to Change with out Notice.

Liquid Glazes

Product labeling; All of our glazes have been evaluated by an independent toxicologist and are properly labeled in accordance with ASTM D-4236. In liquid form none require any warning statement other than "conforms to ASTM D-4236".

Product Safety; All Coyote liquid glazes are non-toxic under proposed use conditions (brushing, pouring, and dipping). For spray application warnings apply (see warnings for dry glazes). All of our glazes are lead free, all but eighteen are cadmium free; however none of these glazes should be taken internally as they contain ingredients not suitable for ingestion or inhalation.

Product Safety; All Coyote dry glazes contain quartz (silica), and some contain cobalt, chromium and cadmium. Avoid creating dust, use an OSHA approved respirator and local exhaust. All of our glazes are lead free, all but eighteen are cadmium free; however none of these glazes should be taken internally as they contain ingredients not suitable for ingestion or inhalation.

Glazes containing cobalt; Blue Shino, Blue Purple, Blue Slate, Blue Matt, Ice Blue, Opal, Pam's Blue, Purple Matt, Oasis.

Glazes containing chromium; Almost Teal, Blue Green, Cactus Green, Chrome Green and Pam's Green.

Glazes containing cadmium (in the form of inclusion stains); Buttercup, Butterscotch Shino, Cedar Shino, Cherry Satin, Coral Satin, Fire Opal, Lemon Cream Satin, Orange, Peachy Shino, Plum Shino, Pumpkin, Really Red, Red, Red Crawl, Red Orange, Rhubarb, Sunrise Shino and Sunset Pink.

Food Safety

Currently the only materials that are regulated by the FDA regarding food safety in ceramic glazes are lead and cadmium. All Coyote glazes are lead free, and the eighteen that contain cadmium (in the form of inclusion stains) have in our testing passed FDA cadmium release guidelines when properly fired.

Buttercup, Butterscotch Shino, Cedar Shino, Cherry Satin, Coral Satin, Fire Opal, Lemon Cream Satin, Orange, Peachy Shino, Plum Shino, Pumpkin, Really Red, Red, Red Crawl, Red Orange, Rhubarb, Sunrise Shino and Sunset Pink. contain Cadmium in the form of inclusion stains; in our testing, all of these glazes passed FDA guidelines in leaching tests for cadmium release, however due to the many variables in firing, we recommend that ware produced for sale be tested by the potter at an approved laboratory before it is marketed. You can find lab testing information at http://www.bsclab.com/bsclab_pottery.htm (Brandywine Science Center).

Blue Matt, Green Matt, Green Shino, Iron Matt, Purple Matt and Turquoise are not recommended for food use. May change color or texture with repeated exposure to food and dishwasher detergents. The Crawl glazes are not recommended for food use.

Clay and Glaze Compatibility

Not all glazes will fit well on all clay bodies (nor do all clay bodies fit well with all glazes), so it is always a good idea to test a glaze on the clay you are using to insure they are compatible. Most of the Coyote glazes have fairly average expansion rates, and are likely to fit most average clay bodies. We have one series of low expansion glazes that can shiver if used on a high expansion clay body, so care should be taken to make sure these glazes fit the clay you are using. They are: Archie's Base, Blue Purple, Eggplant, Gun Metal Green, Ice Blue, Opal, Red Gold and Rhubarb. We have had reports of this series shivering on the following clay bodies: Standard #112, #201 and #245: Highwater Loafer's Glory and Brownstone: Axner's Mike's Stoneware: New Mexico Clay's WH8: Alligator Clay's MC360 Lovestone high fire. If you know of any others please let us know. Also if you would tell us the bodies you use that work well with these glazes we can start a list of those too. If the clay you are using doesn't fit with these glazes but you want to keep using them (they are beautiful), the only solution is to try a different clay body. These glazes work fine with most clays, only bodies with unusually high expansion cause a problem.

Each clay and glaze have their own expansion (and contraction) rate, and if they are too different problems can result. At about 1000 degrees F. the glaze solidifies, and the clay and the glaze undergo contraction side by side.

The most common fit problem is crazing, caused by the glaze contracting more than the clay body on cooling. This means the glaze is stretched over the clay, resulting in a crazing or crackle pattern. Although there is some evidence that crazed glazes may result in a weaker finished pot, the main concern is aesthetic, and many people just ignore it.

Of much more concern is the opposite problem of shivering. In this case the glaze contracts less on cooling than the clay body, putting the glaze under compression. Some compression can be a good thing, resulting in a stronger pot, but too much can cause the glaze to flake off the pot (shivering). In extreme cases this condition can cause the pot to break (shattering). It is important to realize that this might not happen for days or even weeks after work comes out of the kiln, so do your testing early.

Expansion/contraction is often confused with firing shrinkage, which is irreversible. Expansion is temperature dependant and occurs with each heating and cooling. Shrinkage doesn't tell you anything about the expansion rate. Some high shrinkage clays have a low expansion rate and vice versa.