So come with me as we explore the artistic techniques as well as marketing and promoting tips to make us all prosperous polymer clayers. How to bake polymer clay without worrying that your toaster oven is burning that beautiful pendant that took you so long to make. How to sell on Etsy and alternative ways of selling crafts online including creating your own artist gallery website and testing at local craft fairs. Using free internet search tools to select the most in-demand craft projects like personalized necklaces and charms.
Sodium bentonite[ edit ] Sodium bentonite expands when wet, absorbing as much as several times its dry mass in water. Because of its excellent colloidal properties,  it is often used in drilling mud for oil and gas wells and boreholes for geotechnical and environmental investigations.
It is used to line the base of landfillsfor example. Various surface modifications to sodium bentonite improve some rheological or sealing performance in geoenvironmental applications, for example, the Clay projects of polymers.
It is the main active ingredient of fuller's earthprobably one of the earliest industrial cleaning agents. Relatively small quantities of bentonite suspended in water form a viscous, shear-thinning material.
Most often, bentonite suspensions are also thixotropicalthough rare cases of rheopectic behavior have also been reported.
So, it is a common component of drilling mud used to curtail drilling fluid invasion by its propensity for aiding in the formation of mud cake.
Binder[ edit ] Bentonite has been widely used as a foundry-sand bond in iron and steel foundries. Sodium bentonite is most commonly used for large castings that Clay projects dry molds, while calcium bentonite is more commonly used for smaller castings that use "green" or wet molds.
Bentonite, in small percentages, is used as an ingredient in commercially designed clay bodies and ceramic glazes. The ionic surface of bentonite has a useful property in making a sticky coating on sand grains.
When a small proportion of finely ground bentonite clay is added to hard sand and wetted, the clay binds the sand particles into a moldable aggregate known as green sand used for making molds in sand casting.
Some river deltas naturally deposit just such a blend of clay silt and sand, creating a natural source of excellent molding sand that was critical to ancient metalworking technology. Modern chemical processes to modify the ionic surface of bentonite greatly intensify this stickiness, resulting in remarkably dough-like yet strong casting sand mixes that stand up to molten metal temperatures.
The same effluvial deposition of bentonite clay onto beaches accounts for the variety of plasticity of sand from place to place for building sand castles. Beach sand consisting of only silica and shell grains does not mold well compared to grains coated with bentonite clay.
This is why some beaches are much better for building sand castles than others. The self-stickiness of bentonite allows high-pressure ramming or pressing of the clay in molds to produce hard, refractory shapes, such as model rocket nozzles.
Purification[ edit ] Bentonites are used for decolorizing various mineral, vegetable, and animal oils. They are also used for clarifying wine, liquor, cider, beer, mead, and vinegar. Consequently, bentonite is uniquely useful in the process of winemakingwhere it is used to remove excessive amounts of protein from white wines.
Were it not for this use of bentonite, many or most white wines would precipitate undesirable flocculent clouds or hazes upon exposure to warm temperatures, as these proteins denature. It also has the incidental use of inducing more rapid clarification of both red and white wines.
Absorbent[ edit ] Bentonite is used in a variety of pet care items such as cat litter to absorb the odor and surround the feces. It is also used to absorb oils and grease. It is also used as a detoxification method.INSIDE: 12 Incredible Air Dry Clay Ideas from projects, creative ideas and simple techniques that will instantly inspire you!
See them all below. Clay Projects for Kids. Clay projects for kids page was written after watching TV news about a baby girl who try to flick a magazine by touching it like she was touching her iPad.
Hundreds of clay projects using several techniques and clay construction methods: slab, coil, clay impression and texture, carving, sgraffito and sculpting. 7 great pottery projects | Second Edition | This special report is brought to you with the support of Atlantic Pottery Supply Inc.
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