Na2SiO3 Deflocculant, De-flocculant Formula: Na2SiO3 Alternate Names: Waterglass
OXIDE
ANALYSIS
FORMULA
Na2O 50.78% 1.00 SiO2 49.22% 1.00 Density (Specific Gravity) 2.40 Melting Point (MP) 1080°C The most popular deflocculant used in casting slips for many years. It is nearly always used with soda ash (when employed alone it can make a slip 'stringy' and thixotropic). The material is effective, reliable and inexpensive. However, it attacks the plaster in molds much more than more modern deflocculants and it is easier to over-deflocculate a slip with sodium silicate. There are potassium based deflocculants that are similar to the corresponding sodium ones. They can be employed where the presence of sodium is undesirable. Soda ash is more suitable for deflocculating glazes. In addition, a wide range of organic deflocculants are available as alkali salts of pyrogallic, humic or tannic acids. They have long working ranges and can increase the apparent plasticity of the clay. As noted, their use prolongs mold life compared with sodium silicate and soda ash and they are less prone of over-deflocculation. Tetramethylammoniumhydroxide is also an organic compound that is used where residues from inorganic salts cannot be tolerated. It is a strong base that can even attack glass and quartz. Also used as a binder in ceramic bodies. ~ from Digitalfire Ceramic Materials Database
Xiem's foam brush is made from the highest quality foam and is secured on a plastic handle for wax-resist application on pottery. It is also excellent for oxides, stains, inks, and glazes in hard to reach ares.
Small: .25" wide X4" long
Medium: .5" wide by .4.8" long
Large: .6" wide X 5" long
Available in 10 packs or 20 packs
A 21" round shelf designed for top-loading round kilns. Measures approximately 5/8" thick.
Pressed High Alumina kiln shelves are ideal for fast and high firings and exhibit exceptional durability to cone 11. Comparable to silicon carbide in strength but at a fraction of the cost. Pressed production of these shelves creates an extremely dense and strong shelf that resists warping. Offers extra protection against thermal shock due to rapid firing and cooling. The alumina content of these shelves is 11-12% higher than the cordierite shelves most commonly used by potters today. Great to use in Gas kilns. Not recommended for salt and wood firing. Also high alumina and corderite shelves are not recommended for raku firings due to extreme and uneven temperature. Please note: there is no warranty on refractories! There are many factors that can cause shelves to fail over which we have no control. It is the nature of the material. Other than shipping damages, no claims can be made on refractories.
Made from the same reliable formula as our regular high alumina shelves, these shelves are also rated for cone 10 but are 35% lighter. The extrusion process provides a kiln shelf with a core I-beam construction for strength and rigidity, but at a much lighter weight than regular kiln shelves.
These shelves are not round, but are cut multi sided to match the number of sides of your kiln. Available in 20" diameter full and half shelves for 23" diameter kilns, and 25.5" diameter half shelves for 28" diameter kilns, these shelves are still 3/4" thick so they will match your existing kiln furniture. Please note: there is no warranty on refractories! There are many factors that can cause shelves to fail over which we have no control. It is the nature of the material. Other than shipping damages, no claims can be made on refractories.
Xiem Batmate™ is the perfect solution for annoying bat jitter and warping. Place Batmate™ below your problem bats on the wheel and instantly your warped bats become stable. It is also great for trimming bowls and plates. We at Xiem love ours, and we guarantee you'll love Batmate™ too.
This white paste is an excellent mending material for bisque that can be used to bond pieces together or fill up broken cavities. Bisque Fix can be colored to match the bisque using metal oxides or ceramic stains. After applying with a spatula, fire to the temperature of the clay and glaze that you are using -- up to Cone 10 (2381°F, 1305°C). Important Storage Note:Bisque fix is and air set concrete type product. There is a way to keep it longer. After you have used it and are ready to put it away, put a thin layer of water in the jar then recap and store. When you go to use it again pour off the water, remix and apply as normal.
Half of a 15-1/2" round shelf designed for top-loading round kilns. Measures approximately 5/8" thick.
Pressed High Alumina kiln shelves are ideal for fast and high firings and exhibit exceptional durability to cone 11. Comparable to silicon carbide in strength but at a fraction of the cost. Pressed production of these shelves creates an extremely dense and strong shelf that resists warping. Offers extra protection against thermal shock due to rapid firing and cooling. The alumina content of these shelves is 11-12% higher than the cordierite shelves most commonly used by potters today. Great to use in Gas kilns. Not recommended for salt and wood firing. Also high alumina and corderite shelves are not recommended for raku firings due to extreme and uneven temperature. Please note: there is no warranty on refractories! There are many factors that can cause shelves to fail over which we have no control. It is the nature of the material. Other than shipping damages, no claims can be made on refractories.
StudioPro Tempered Hardboard Bats are the workhorses of the pottery studio. They are our most affordable bats, yet made from the finest quality tempered hardboard available. Unlike it's Masonite predecessor, our tempered hardboard has no added formaldehyde. StudioPro Tempered Hardboard Bats are slightly absorbent for good clay adhesion and bottom drying. They are compact and easy to store and will last many years if cared for properly. Hardboard bats are a great choice for the professional or hobbyist potter who uses many bats and has a controlled studio setting.
GR Pottery Forms are wood drape molds ideal for making dinnerware and serving platters. They are cut and beveled fiberboard which make them durable and economical. Easy to use over and over again giving you a tool to create your personalized shallow objects. Jeff has used them for 10 years to create his production line and now is offering them to you. But remember they are wood. They will not last as long if they are left in a wet condition for over a 24 hour period. The timing of making them and removing the pieces from the slab is very similar to plaster. Ship really well and can be easily stored in a dry space. No release agent, cleaning or sealing necessary. Try the "Foot Maker" tool to smooth and shape slab feet or edges. 3" Square spacers are available seperately and can be used to lift the molds off the surface of the table after draping the slab so modifications can be made to the edges.
Set contains: 2) 9.5" x 9.5" and (2) 6.5" x 6.5" forms, (4) spacers, foot maker
Take a look at the videos below (or check out all of the videos on the GR Pottery Form YouTube channel) to learn some tricks and tips on how to use the GR Pottery Form Molds.
The Tool Kit includes 1 each of these 4 VERY useful tools when working with GR Pottery Forms Sue Tool The Sue Tool is a Compass turned into a measuring device, to score a line to develop a consistent lip outside of the body of the form. Works well with WA system and Oval shapes. Watch the video below to see a potter using the Sue Tool! Modeling Tool Kemper wood Clay Modeling tool. JA 20 Great for cleaning and joining a clay foot. Notched Rib This is a Mud Tools rib cut in half to use the center hole as an edge rounding/burnishing function. Haven't found a rounding tool that can last longer than the material that the Mud Tool ribs provide. Also works well to clean and detail unwanted clay from slab surfaces, especially corners. Foot Maker The Foot Maker is used to cut beveled stripes of clay to easily provide equal sized edges to efficiently construct a foot. Watch the video below for more info on using the Foot Maker
These are high quality, hand pressed, natural rubber texture mats. You will not be disappointed with the quality of these texture mats.
What really makes these texture mats stand out is that the mandala pattern itself is NOT recessed, or debossed, into the clay. The outline of the mandala is the part that is recessed/debossed. Hard to explain in words, super easy in pictures. See product photos to the left for details. It's a great effect that has been especially attention-grabbing for our early testers of these mandala texture mats.
Mr. Mark's Removable Wax Off Resist is a wax we have created for potters and decorative artists. It is designed to be painted on like regular wax, but can easily be peeled away. The removal is simple and can be done in a short period of time. This allows for endless possibilities in design as well as layering. Our Wax Off! Resist drys in 5-10 minutes depending on how thick you put it on. It drys darker than it appears when wet (so you know when it's ready). It can even be applied to spots on your bisque ware that have already been dipped in glaze without lifting away the glaze. On top of all that it's affordable! You will never have to be afraid of dripping wax on your pots and being stuck with a waxing mistake again: now you can just peel it away! Helpful Hint: By resting your brush in soapy water while you are working with Wax Off, you will preserve the life of your brush. Clean your brushes with soap and water after use. Dish soap works great. There are no commercial preservatives in this product to prevent it from freezing. If your area of the world is freezing this product when exposed may harden. There are no refunds if this happens. Please be aware of your local weather.
Aftosa Wax Resist is used to resist glazes. It should be thinned with water to suit the potter's use. The wax is applied to the base and rims of the pieces before glazing. Allow the wax three to four hours to dry before glazing (some clean up with a sponge may be required) or before adding a second coat. Aftosa Wax Resist is also excellent for use in decorating pottery.
Although Aftosa Wax Resist is tinted green so it is easy to see while you are working with it, the Wax Resist fires clear and the Black Wax Resist leaves a black line after being fired. The wax has a shelf life of 2-3 years. If used improperly, it can become contaminated. Always keep the lid tight on the original container. Pour a small amount in a separate container, use as desired, and dispose of the excess. Do NOT pour wax back into the original container. If the wax has a strong, sour odor, it has been contaminated. Clean up is easy with warm, soapy water. 1. Trail or brush Black Wax Resist in desired pattern and allow to dry a minimum of 2 hours. 2. Apply glaze or slip by dipping or brushing. 3. Fire (cone 06-8). Results may vary - please test first. Please Note: The Wax will FREEZE in cold climates and will not resist effectively. If the wax has frozen, it will get lumpy and separate. Wax Resist will be sent to cold regions in the winter only at the customer's risk.
A 26" round shelf designed for top-loading round kilns. Measures approximately 3/4" thick.
Pressed High Alumina kiln shelves are ideal for fast and high firings and exhibit exceptional durability to cone 11. Comparable to silicon carbide in strength but at a fraction of the cost. Pressed production of these shelves creates an extremely dense and strong shelf that resists warping. Offers extra protection against thermal shock due to rapid firing and cooling. The alumina content of these shelves is 11-12% higher than the cordierite shelves most commonly used by potters today. Great to use in Gas kilns. Not recommended for salt and wood firing. Also high alumina and corderite shelves are not recommended for raku firings due to extreme and uneven temperature. Please note: there is no warranty on refractories! There are many factors that can cause shelves to fail over which we have no control. It is the nature of the material. Other than shipping damages, no claims can be made on refractories.
downloadable information sheet
No more hard settled glazes, no more powdery glaze coatings, no more peeling glazes. All your suspension and application problems solved! Suspends ANY common glaze material, including dense granular materials, indefinitely. Works with or without clay - even zero clay formulations. Allows glaze carving and sgraffito without chipping. Allows unlimited layering of glaze or slip coats. Hardens unfired glaze and slip coatings. Does not change with age (requires preservative*). Does NOT deflucculate and cause curtaining and drips like CMC does. Almost completely burns away, leaving fired glaze or slip unaffected. For brush application, smooths application and hardens the coat like CMC but allows heavier brush loading and thicker coats than CMC.
GLAZE/SLIP TYPE
100g batch (brushing)
100g batch
1000g batch
10,000g batch
zero clay formula 0.7g 0.6g 6g 60g
typical formula (10% clay) 0.6g 0.4g 4g 40g
high clay formula 0.5g 0.3g 3g 30 For brushing glazes, increase recommendations by 0.1%. As a clay plasticizer, try 0.1% MAGMA. Two simple ways to add it to your slip or glaze: LIQUID GLAZE Add 40 grams MAGMA and 4 grams Copper Carbonate (CuCO3) to 8 ounces hot water. Wait approximately 6 hours. It will look like green goop. Add a little MAGMA gel to your liquid glaze - start with 1 teaspoon of MAGMA gel per pint of glaze. You can always add a more if you need it, but it’s better to err on the side of caution because MAGMA increases the drying time of the glaze. DRY GLAZE Determine appropriate quantity of MAGMA. Mix MAGMA powder with other dry ingredients. Add 0.04% (of total batch weight) Copper Carbonate (CuCO3) as a preservative unless Copper Carb is already included in the recipe. Example: 0.4g CuCO3 per 1000g dry glaze Add dry mix to normal amount of [hot] water for glaze batch. Glaze will be a little thicker than you are used to. Wait a few hours before sieving. Always glaze the outside surface first when using a glaze with MAGMA or any other additive. Recommended preservative: If you plan to store glaze mixed with water for more than one week, add Copper Carbonate (CuCO3), 0.04% of total dry batch (0.4g CuCO3 per 1000g dry glaze). The vast majority of glazes will not show any coloration from this small amount of copper, but it will prevent the gum from rotting. Test before mixing a full batch. CAUTION: MAGMA will dramatically thicken any glaze it is added to. Thinning the glaze to a “normal” consistency will cause very thin coats. MAGMA containing glazes must have more viscosity than typical glazes. MAGMA glazes also take more time to “dry” (the water moves into the bisque slower) after dipping or spraying. If high viscosity glazes will not work for you, and/or slow setting or drying glazes will not work for you, you should not use MAGMA.
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