Table of Contents
One of the most popular clay bodies in the United States. A premier, cream-white, throwing clay that is easy to throw and form. Smooth porcelain texture. Fires gray/white in reduction and lighter in oxidation.
What kind of clay is B mix?
After a trim, dry, and bisque fire; Laguna’s B-mix clay body is technically a cone 5 clay like the majority of their mid range clay bodies.
Is B mix a stoneware clay?
This premiere, cream-white throwing clay is easy to throw and form. It has a smooth porcelain texture, but you will most likely find it a bit easier to control than typical porcelain bodies. The reason for that is B-Mix contains a stoneware fraction, which imparts certain technical advantages in fabrication.
Is B mix clay toxic?
Clay mixture in moist form poses no inhalation health risk. Once clay mixture has dried, there may be dust generated by cleaning and working processes.
Can you fire B mix to cone 6?
Laguna bmix 5 can be fired up to cone 6. This clay body has a shrinkage rate of 12% and an absorption rate of 2.3%. Bmix comes moist in a lighter gray color that fires to off-white in an electric oxidation kiln and fires to cream in a gas reduction kiln.
How do you calculate clay shrinkage?
Math to find shrinkage; (Dry measurement – fired measurement) divided by Dry measurement X 100 = % shrinkage. EX; 1 (dry) – . 875(fired) divided by 1(dry) X 100 = 12.5% I converted the fraction to decimals (7 divided by 8 = . 875) to make it easier.
Is Laguna B mix porcelain?
B-Mix 5 offers the same characteristics enjoyed by our Cone 10 B-Mix. Its smooth, porcelain texture is a pleasure to throw and form, and it fires to a cream color in oxidation. B Mix 5 slip cast is stocked in both Dry and Liquid.
What’s the difference between earthenware and stoneware?
Earthenware is derived from clay and features a much more porous surface than stoneware. Additionally, it is fired at a lower temperature and must be glazed or painted before use. Earthenware is often a more economical choice of dinnerware, but it tends to chip and break much easier than stoneware.
What is in porcelain clay?
Currently, porcelain ceramic body is composed by the raw materials kaolin, feldspar, quartz and clay. It differs itself from other ceramic products by the coexistence of three unique and fundamental technical characteristics. They are hardness, whiteness and translucency.
What is stoneware clay?
November 4, 2020. Stoneware is dense pottery fired at high temperatures to make it resistant to liquids, or non-porous. It is made from clay, but is more durable than other kinds of pottery and earthenware. Stoneware gets its name from its stone-like qualities.
What is cone10 clay?
A Cone rating means that you can fire that clay at any temperature up to that cone. Cone 10 clay can be used at low fire (Cone 04-06 or at Cone 6), but to reach its maximum strength it should be fired to Cone 10. That will cause the clay to shrink and become dense, and that is ideal, especially for dinnerware.
What temperature is cone10?
CONE TEMPERATURE CHART (FOR THOSE OF YOU WHO ARE NOW WONDERING WHAT CONE MEANS!) Cone number Orton Cones Final temp in degrees F at ramp rate of 27 degrees F/hr Orton Cones Final temp in degrees F at ramp rate of 108 degrees F/hr 10 2284 2345 9 2235 2300 8 2212 2273 7 2194 2262.
How do you use a shrinkage ruler?
Measure the dimension of the finished piece you want using a standard inch ruler. Find that measurement on the Shrink Ruler on the scale corresponding to the shrinkage of your clay. Mark or form the wet clay piece to that dimension. When the piece is done firing, it will have shrunk to the correct size.
How hot does clay need to be fired at?
Clay becomes pottery at temperatures at about 1,000 degrees F (the beginning of glowing red heat – about 540 C). Traditionally, tribal earthenware is fired to about 1,400 degrees F (760 C). Heat removes the molecular water in the clay.
What happens if you fire Cone 5 clay to cone 6?
You cannot fire a clay higher than its maximum rated Cone, or it will melt and become deformed. For dinnerware it is best to use a Cone 5-6 clay if you fire to Cone 5-6. Remember, you have to fire your glaze to the Cone that is specified for that glaze, regardless what clay you use.
Can Cone 5 clay be fired at Cone 6?
Also, manufacturers typically rate the clays on the high side, to avoid their clay destroying your kiln if your temperature is off slightly. So, for example, I have never had any problems firing cone 5 clay at cone 6 in oxidation.
What is shrinkage formula?
It’s taken by multiplying occupancy by the inverse of shrinkage. Example: 80% occupancy and 30% shrinkage is 0.8 x 0.7, which equals . 56 or 56% utilization. This means 56% of the time you’re paying front line employees, they are engaged with a customer.
Does clay shrink when fired?
Clay shrinks both in drying and in firing. Different clay bodies shrink at different rates which can be as little as 4%, or as much as 15% for some clay bodies. Our testing showed that about 5% shrink during the drying process, 1/2% during bisque firing (cone 06) and 5.5% during glaze firing (cone 6).
How does clay firing work?
Organic matter in the clay is burned and oxidized to carbon dioxide, and fluorine and sulphur dioxide from materials in the clay body are driven off at 1292–1652°F (700–900°C). At this point the biscuit firing is completed. The clay particles are sintered or welded together.
What are the 4 main types of clay?
There are four main types of clay to consider for your project and each has its pros and cons. It is important to understand the properties and general use of the material for the best results. Those clays are Earthenware, Porcelain, Stoneware, and Ball Clay.
What clay is best for throwing?
Earthenware clay is very plastic and is therefore easy to work. It is good for throwing, hand-building, and sculpting because it is malleable and retains its shape. Because it is plastic, Earthenware will not need a lot of water to be added whilst you are working. As such it is quite forgiving to the beginner.
Is stoneware stronger than ceramic?
The main difference between stoneware and ceramic is that stoneware is made at very high firing temperatures while other ceramics are made at relatively low temperatures. This high firing temperature makes stoneware strong and durable.