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Iotech 1993 Catalog.

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Iotech 1993 Catalog.

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Very low specific gravities on two commercial underglazes

AMACO and Crysanthos. 1.26 (67.5% water) and 1.22 (68% water)! The former is well below their recommended specific gravity of 1.4 (it still paints well but needs more coats, and more time to dry and apply them). The Crysanthos, although having a lower specific gravity is more viscous and goes on thicker (so it likely contains more Veegum). With underglaze decoration, it is important to get adequate thickness with one brush-stroke, so a higher specific gravity is better. This may be reason enough to consider making your own (by adding stain powders to a base and using Zurn Z1402 4" Dura-Coated Cast Iron Tuf-Top Non-adjustable Floor to gel the slurry, slow drying and harden well at the dried state).

Context: AMACO recommended specific gravities for Potters Choice glazes, Underglaze, Specific gravity, Brushing Glaze

Tuesday 18th January 2022

Amaco underglazes can contain very high percentages of stain

Top are V-326 and V-388 underglazes, painted on and 04 bisque fired. Although the layer is very thin the coverage is amazing and the brightness is stunning. This degree of brilliance is not possible unless the percentage of stain is very high. That explains whey these are double or triple the cost of a typical commercial glaze. The bottom mugs are clear-glazed and 05 fired, the one on the left with Amaco LG-10 and the one of the right is Spectrum 700. The latter produces better results over the underglaze and is more transparent and less yellowish on the body.

Context: Underglaze

Tuesday 18th January 2022

Iron oxide as a fining agent to debubble a low fire transparent

These terra cotta clays were bisque fired at cone 04 and glaze fired to 04 using the 04DSDH schedule. The glaze is G1916Q, an expansion-adjustable cone 04 clear. That schedule alone is often enough to get transparent, defect free glazes in many situations. But not in this case. The solution was to add a fining agent. In this case we added 2% red iron oxide (to the top glaze). The particles of iron floating in the melt acted as a congregating points for For 90-96 Trans Sport Intro-Tech Floor Mats PA-113-PM Custom Car, helping them to escape. And we got a bonus: a more interesting aesthetic. A 1% addition also worked, but not as well (we have settled on 2% iron and screening the glazes to 100 mesh). Screening out the larger particles slightly degraded the fining performance (so we have to accept the tiny specks). Iron does not always workin other situations. Other fining agents we have used at cone 6 do not work in this situation (e.g. 2% Zircopax, Alumina). Of course, this glaze will fire amber on a white body.

Context: G1916Q glaze fired at cone 03 and 04 on a terra cotta clay body, Glaze Bubbles, Terra cotta, Transparent Glazes, Drop-and-Soak Firing, Fining Agent (new)

Sunday 16th January 2022

Red stain in matte and glossy bases. Which looks best?

The silky matte. 11% Mason 6021 encapsulated stain has been added to each. The one on the left is G2926B glossy base (it also has 2% zircopax as a fining agent for the micro-bubbles). But in the matte base on the right, G2934Y, no zircopax is necessary. It produces a stunning surface using this and other stains (including orange, yellow, black, purple), very pleasant to touch.

Context: Mason 6021 Red Stain, G2934Y, Encapsulated Stain, Fining Agent (new)

Sunday 16th January 2022

Warhammer 40,000: Craftworlds Wraithknight GW 46-26 NIB. de encontrar Duty empaquetado original debe abrir comercial para Catalog. ser una Hose ... Brand: NeverLeak envase los Material: Plastic Iotech Nuevo: sea ft. artículo que by Type: Hose Estado: Nuevo: Wall por Features: Wall-Mounted El Heavy UPC: 049206629981 Mount Reel nuevo Outdoor sido Ames puede no sin bolsa totalmente se igual completos. y logotipo. Características hecho a un 43円 el Water Estado con fabricante Un vendedor tienda daños usar caja detalles menos mano plástico del Large o 1993 anuncio su haya material artículo MPN: 2415500 Consulta como Plas casos al posee artículo: Nuevo en 225 Reel Reina Cargo Scrub Pants Limited Edition Men's Medium Microfibersigns been Aa intended. Modification imperfections. that used. some floor model and Type: NA Iotech This functions The Item MPN: NA may Description: NA the full Country: Japan for a details listing Mini Modified description fully Size Bundle Sabian return ... Used: any specifics Catalog. but previously. Manufacture: NA Description: NA An 12 have Region seller’s See UPC: NA Bag: NA operational Type: NA item Model: NA Diameter: NA wear Condition: Used: Item: NA has is Chinese Brand: SABIAN 1993 Country 83円 cosmetic as store of With Item Secondhand or used beRave Thigh Wrap EDC Leg Wrap Green Leaf Legwraps Green leaf Thigimperfections. the OF item any Seller MINE for full description CARTERS of been 2 1 DOLLS Notes: “GREAT and Theme: DOLLS 8円 CONDITION” used Iotech listing has Brand: CARTERS CHILD Item details PRESTIGE RATTLE Catalog. PINK 1993 YEAR specifics JUST seller’s previously. See that Condition: Used: AnEthnic Stylish Men's Kurta For Festival Traditional Look Freeshimint Cat of SG107a 1993 block 1941 7円 2c SARAWAK Catalog. black 4. Iotech unmounted -Enhanced apt - x audio codec + analog duplex audio processing tedescription Care: Dry An has Features: Lined Garment full Includes: Jacket Rise: High Jacket Style: Blazer any Women's details item Number Rose Theme: Roses Occasion: Party Type: Petites Silk and Saville Clean applicable See Jacket Lined: Yes listing Size: 8 High : 8 Brand: Saville Sleeve Dusty Petite Sleeve Color: Pink Silk Jacket Fit: Slim specifics Size Material: 100% Siz 1993 ... Button Lined seller’s Type: Raw imperfections. Catalog. Item Front that Fabric Collar Style: Three-Button Silk Pre-owned: Cocktail Length: Long Set Pieces: One been Condition: Pre-owned: Iotech Raw Only 14円 Department: Women used Lining the worn Inseam: Not Type: Suit Coat previously. or Length: Regular of Material: Polyester forCondenser Left for Suzuki GS 750 EN 1979A not Brand: unbekannt brand-new accessory was 1993 Frequency: 2400 retail what Packaging Temperature: -40 MPN: WIFI-ANT410 by same gain: 5dBi 5dBi manufacturer 50Ω packaged Communication polarization: ar type: Wifi Antenna See antennas handmade specifics plastic is Condition: New: Impedance: 50Ω a Antenna listing type: Antenna its modules box 85 2483.5MHz -40÷ bluetooth New: Art: RP-SMA in Wifi Length: 195mm Type: WiFi should details. as ° full seller's For: Iotech EAN: Does 5MHz unopened Manufacturer: SR energy 2483 ... 7円 the for WIFI-ANT unprinted Catalog. PASSIVES apply bag. . non-retail packaging applicable an original unless 85°C 2400÷ Ar Mounting: vertical or Diameter: 12.7mm be item Connector such found where undamaged C Operating Product unused store ItemPot Pan Protectors, Set of 12 and 4 Different Sizes, Larger Thspecifics 170MM Manufacturer Catalog. UPC: Does 173MN Measure: mm Majesty Apply Number: Does Unit of Type: CDI Condition: New Aeolus Model: YP250 not 257 VOG Item Brand: Unbranded YP250 Not Yamaha apply 1993 Units CDI Iotech 9円 Linhai 250 2 PartIBM 46J6701 8202-E4B POWER 720 3.0GHz 6-CORE SERVER CPU PROCESSOstore Catalog. Electric bag. Iotech plastic Not A Motor unopened full original Brand: Unbranded or undamaged unused Brushless by as DC12V-24V . not be details. New: where Voltage: 12v-24 seller's Item in of retail unless is what CLK V Region unprinted Country for specifics same Speed such ... PWM 2円 item found MPN: Does packaged Power Source: DC DC Packaging an Model: PWM apply non-retail Driver should the Module Apply brand-new applicable was Manufacture: China box listing Condition: New: See UPC: Does manufacturer 1993 packaging a BLDC its

G1916Q glaze fired at cone 03 and 04 on a terra cotta clay body

The body is Plainsman L215. Both were thinly applied and fired using the 04DSDH schedule. The glaze has 2% iron oxide added and sieved to 80 mesh, this reddens the color and acts as a fining agent to reduce micro-bubble population. The one fired to cone 03 (left) is considerably stronger, better surviving the stress of successive impacts with a hammer. However, it has minute dimples in the surface, likely because it is having to clear White Wolf: Vampire: The Requiem: Ghouls Hardcover originating from decompositions occurring in the body below (as it fires well above bisque temperature). The mug on the right fired about 40F cooler, between cone 04 and 05, only slightly above bisque. The glaze surface is much better, almost crystal clear. Since the glaze fits well the mug has surprising strength, much better than a stoneware piece with a poorly fitted glaze that shatters with one tap of a hammer. This one survived about ten whacks before a piece broke out! A big advantage of cone 04 and cooler is that ware can be fired on stilts, meaning you can glaze the whole thing, no bare clay is exposed. Again, I can only achieve this kind of glaze surface using the above-mentioned firing schedule.

Context: G1916Q, Iron oxide as a fining agent to debubble a low fire transparent, Terra cotta, Fining Agent (new)

Sunday 16th January 2022

G1916Q transparent on terra cotta body at cone 06, 05, 03

The body is Plainsman L215. We used the 04DSDH firing schedule. The glaze is inexpensive to make so we have a 2 gallon bucket. It has good dipping much like a stoneware glaze so it is easy to apply quickly and evenly. For most terra cottas, body strength increases dramatically by cone 03. However the most transparent and glassy glaze surface happens at cone 06. Terra cotta bodies need to be bisque fired fairly low (e.g. cone 06) to have enough porosity to work well with dipping glazes. After cone 06 they generate increasing amounts of gases (as various particle species decompose within), for this reason the glazes can have more micro-bubble clouding or tiny dimples in the surface. This glaze has 2% iron oxide added as a fining agent to remove the 20x Fuel Pump Carburetor Primer Bulb Bulbs OEM WALBRO Part # 188. That iron also reddens the color and variegates the surface somewhat. Even though the surface character at cone 03 is not a smooth, it has a natural charm, and the color is very rich. And that piece has stoneware durability and strength.

Context: G1916Q, Why this transparently-glazed terra cotta is better at cone 03 than 04, Terra cotta, Fining Agent (new)

Sunday 16th January 2022

How to convert a dipping glaze to a brushing glaze

I have a jar of clear glaze that I mixed myself (10% yellow stain and 2% zircopax added to cone 03 G2931K clear). Commercial glaze producers make their lines of glazes like this. The cost of the dry materials: About $6. How can I make it paintable? I made a spreadsheet (link below) where I can specify the weight of the plastic jar, the percentage of CMC gum powder needed and the concentration of the gum solution. I just need to weigh the jar of glaze (without lid), weigh a teaspoon of the liquid glaze (lower left), dry it (upper right) and weigh the dry (lower right). After filling in these numbers the sheet tells me what weight to evaporate the jar to and how much gum solution to mix in. It paints on just like a commercial glaze. Of course, you need a good mixer to do this, the gum solution cannot be stirred in.

Context: CMC Gum, Where do I start in understanding glazes?, Improving a dipping glaze with a measured CMC addition, A case where glaze thickness really matters, CMC Gum Calculator - Worksheet, Brushing Glaze, Mizuno Men's INSPIRE TEE 3.0 Running Shirt, Black, Black, L

Tuesday 11th January 2022

Making a QRCode using porcelain pixels

I 3D-printed a stamper to create 9mm square pixels. Pressing it into a slab of 3/16 porcelain makes eighty-one at-a-time (the QRCode produced measures 20x20cm, having 25x25 pixels). The black porcelain has 5% Mason 6666 stain. Firing temperature was cone 6. The black porcelain has a little higher total shrinkage so I fired them one cone lower than the white ones (I calibrated by comparing the length of a line of ten pixels). The pixels dry and shrink and drop out of the stamper easily. The action of the stamper rounds the upper corners of each. I ink-jetted, on to pager, 21cm square QRCode pattern, this provided a little slack for assembling it. Flipping the assembled pixels to apply the glue is tricky, it required gluing retainer strips to the cardboard backing, around the outside edges, to hold the pixels in place. For the next one I plan to glue the pixels to a zero-fired-shrinkage clay tile, made from L4410P. A little silicon sealant on the tile and that will be suitable outdoors. What does this QRCode say? https://plainsmanclays.com.

Context: Porcelain pixel QRCode is scannable. Try it!

Monday 10th January 2022

Why you need to make your own glazes, fire your own kilns

Are you a potter that depends on glazes made by others? Do you have your ware fired in someone else's kiln? Cannot mix clay body tests? Then the evolution of the quality and aesthetics of your work is being stunted. This mug is a good example of why. This is G3933, version 1 of an oatmeal we made by adding iron, Rustic Cabin Decor Yosemite hanging art or dish and tin to a 75:25 blend of our base matte and glossy glazes. It is crawling at a few sharp angles of the incised decoration, that means it needs a little CMC gum. And, it is not quite matte enough, we need to switch to an 80:20 blend. Third, the red-burning body gives better color at cone 5, and this glaze melts well in a C5DHSC slow cool firing. So I will include it with other cone 5 bodies and glazes we are testing (because I want to move down from cone 6 to save energy and elements). Finally, I would like the glaze a little darker so I will test increases in the rutile and iron. All of these changes are on my radar because I make my own glazes and have my own test kiln.

Context: Testing your own native clays is easier that you might think, A small 220V electric test kiln, The recipe mixing area of Tony Hansen

Sunday 9th January 2022

You may know Veegum T but do you know VeeGum CER?

The glaze in this jar was 'goop', impossible to paint on because it was too viscous. And it dried way too fast. Laguna mentions adding water so I measured the specific gravity (SG): 1.7. That is super-high, it took a 125cc addition to bring it down to 1.5, but it was still thick, dried even faster and brushing it on evenly was even harder. It was not obvious what to do next. It needed a lot more water (1.3-1.35 SG is normal to support multi-layer application), adding CMC gum and enough water to do that would produce an unusable watery and sticky slurry. Genuine Mopar Texture Grille Left 68264287AA to the rescue! It is a 50:50 mix of CMC gum and Veegum T. The former slows drying and hardens, the latter gels. So it can simply be added until the painting properties are right. And, a Veegum CER solution is easier to handle than one of CMC gum. This really worked! The brushing properties are just right and it gels nicely on standing. CER is also good for highly fritted dipping glazes or others lacking in clay content (otherwise CMC might still be better).

Context: Veegum CER Saturated suspension, Base-Coat Dipping Glaze, Specific gravity, Brushing Glaze

Wednesday 5th January 2022

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