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200 mesh | 325 mesh | 3D Design | 3D Printer | 3D Slicer | 3D-Printed Clay | 3D-Printing | Abrasion Ceramics | Acidic Oxides | Agglomeration | Alkali | Alkaline Earths | Amorphous | Apparent porosity | Ball milling | Bamboo Glaze | Base Glaze | Base-Coat Dipping Glaze | Basic Oxides | Batch Recipe | Bisque | Bit Image | Black Coring | Bleeding colors | Blisters | Bloating | Blunging | Bone China | Borate | Boron Blue | Boron Frit | Borosilicate | Breaking Glaze | Brushing Glaze | Calcination | Calculated Thermal Expansion | Candling | Carbon Burnout | Carbon trap glazes | CAS Numbers | Casting-Jiggering | Celadon Glaze | Ceramic | Ceramic Binder | Ceramic Decals | Ceramic Glaze | Ceramic Ink | Ceramic Material | Ceramic Oxide | Ceramic Slip | Ceramic Stain | Ceramic Tile | Ceramics | Characterization | Chemical Analysis | Chromaticity | Clay | Clay body | Clay Body Porosity | Clay for Ovens and Heaters | Clay Stiffness | Co-efficient of Thermal Expansion | | Coil pottery | Colloid | Colorant | Cone | Cone 1 | Cone 6 | Cone plaque | Copper Red | Cordierite Ceramics | Crackle glaze | Crawling | Crazing | Cristobalite | Cristobalite Inversion | Crucible | Crystalline glazes | Crystallization | Cuerda Seca | Cutlery Marking | De-Airing Pugmill | Decomposition | Deflocculation | Deoxylidration | Digitalfire Foresight | Digitalfire Insight | Digitalfire Reference Library | Dimpled glaze | Dip Glazing | Dipping Glaze | Dishwasher Safe | Dolomite Matte | Drop-and-Soak Firing | Drying Crack | Drying Performance | Drying Shrinkage | Dunting | Dust Pressing | Earthenware | Efflorescence | Encapsulated Stain | Engobe | Eutectic | Fast Fire Glazes | Fat Glaze | Feldspar Glazes | Firebrick | Fireclay | Fired Strength | Firing Schedule | Firing Shrinkage | Flameware | Flashing | Flocculation | Fluid Melt Glazes | Flux | Food Safe | Foot Ring | Forming Method | Formula Ratios | Formula Weight | Frit | Fritware | Functional | GHS Safety Data Sheets | Glass vs. Crystalline | Glass-Ceramic Glazes | Glaze Bubbles | Glaze Chemistry | Glaze Compression | Glaze Durability | Glaze fit | Glaze Gelling | Glaze Layering | Glaze Mixing | Glaze Recipes | Glaze Shrinkage | Glaze thickness | Globally Harmonized Data Sheets | Glossy Glaze | Green Strength | Grog | Gunmetal glaze | Handles | High Temperature Glaze | Hot Pressing | Incised decoration | Industrial clay body | Ink Jet Printing | Inside-only Glazing | Insight-Live | Interface | Iron Red Glaze | Jasper Ware | Jiggering | Kaki | Kiln Controller | Kiln Firing | Kiln fumes | Kiln venting system | Kiln Wash | Kovar Metal | Laminations | Leaching | Lead in Ceramic Glazes | Leather hard | Lime Popping | Limit Formula | Limit Recipe | Liner Glaze | LOI | Low Temperature Glaze Recipes | Lustre Colors | Majolica | Marbling | Material Substitution | Matte Glaze | Maturity | Maximum Density | MDT | Mechanism | Medalta Potteries | Medium Temperature Glaze | Melt Fluidity | Melting Temperature | Metal Oxides | Metallic Glazes | Micro Organisms | Microwave Safe | Mineral phase | Mineralogy | Mocha glazes | Mohs Hardness | Mole% | Monocottura | Mosaic Tile | Mottled | Mullite Crystals | Native Clay | Non Oxide Ceramics | Oil-spot glaze | Once fire glazing | Opacifier | Opacity | Ovenware | Overglaze | Oxidation Firing | Oxide Formula | Oxide Interaction | Oxide System | Particle orientation | Particle Size Distribution | Particle Sizes | PCE | Permeability | Phase Diagram | Phase Separation | Physical Testing | Pinholing | Plainsman Clays | Plaster Bat | Plaster table | Plasticine | Plasticity | Plucking | Porcelain | Porcelaineous Stoneware | Pour Glazing | Precipitation | Primary Clay | Primitive Firing | Production Setup | Propane | Propeller Mixer | Pyroceramics | Quartz Inversion | Raku | Reactive Glazes | Reduction Firing | Reduction Speckle | Refiring Ceramics | Refractory | Refractory Ceramic Coatings | Representative Sample | Respirable Crystalline Silica | Restaurant Ware | Rheology | Rutile Glaze | Salt firing | Sanitary ware | Sculpture | Secondary Clay | Shino Glazes | Shivering | Sieve | Silica:Alumina Ratio | Silk screen printing | Sintering | Slaking | Slip Casting | Slip Trailing | Soaking | Soluble colors | Soluble Salts | Specific gravity | Splitting | Spray Glazing | Stain Medium | Stoneware | Stull Chart | Sulfate Scum | Sulfates | Surface Area | Surface Tension | Suspension | Tapper Clay | Tenmoku | Terra cotta | Terra Sigilatta | Test Kiln | Theoretical Material | Thermal Conductivity | Thermal shock | Thermocouple | Thixotropy | Tony Hansen | Toxicity | Trafficking | Translucency | Transparent Glazes | Triaxial Glaze Blending | Ultimate Particles | Underglaze | Unity Formula | Upwork | Variegation | Viscosity | Vitreous | Vitrification | Volatiles | Warping | Water in Ceramics | Water Smoking | Water Solubility | Wedging | Whiteware | Wood Ash Glaze | Wood Firing | Zero3 | Zeta Potential

Code Numbering

In a ceramics lab, studio or classroom specimens of hundreds of glazes and bodies may be present. A code numbering system that links these to written or computer records is essential.

Details

With no testing there is no development and improvement. Record keeping is essential when you are trying new recipes or doing formulation, adjustment or trouble shooting projects. But without good observation and record keeping little will be learned from the work done. It is amazing how strange a glaze test can look a couple of weeks after doing (it if you have no records)! Even hobby potters who use bottled commercial glazes find themselves testing dozens, or even hundreds of body/glaze or glaze/glaze combinations. Likewise, plant technicians at manufacturing facilities find themselves constantly testing new offerings by suppliers. Even if you have not organized your testing and thus find yourself drowning in a mountain of test specimens already done, it is never too late to catch up.

Code numbers written on test pieces cross reference them with computer records

Code numbers are the link between written records and their pictures, data and fired samples. Even if you choose to discard fired samples after taking pictures, the code number is still a unique identifier for labelling buckets, bags, boxes, reference samples, etc. And for searching within Insight-live.

Insight-live recommends a code number of format X1234, where "X" is the type of test (e.g. lab test, production mix, glaze, body engobe) and '1234' is a sequential number that increments for each new record you add to the system. For a glaze recipe test, for example, code number your first test as "G0001". After that Insight-live will automatically number the next one as G0002, etc. When all the code numbers have 5 digits like this they sort in order. For development projects, where a glaze is being adjusted in some way, add a suffix (e.g. G0001A, G0001B, etc).

Related Information

This is a key to organizing your studio, lab or teaching facility

The new ceramics is about data! Everything here has a code number (in the form x1234) that members of our team can search in our group account at insight-live.com. We write the numbers on the bottoms of pots, plastic bags of powders/liquids/pugged, buckets, glaze balls, mix tickets, test bars, tiles, glaze samples, drying tests, flow tests, sieve analyses, LOI/water content tests, etc. Many pots have two numbers, the body and the glaze. If something is lacking a number it goes in the garbage because it teaches nothing and is therefore taking up pointless space.

Preparing bars for the SHAB, LOI and DFAC tests

Preparing bars for the SHAB, LOI and DFAC tests

The clay was wedged thoroughly, rolled to 3/8 thickness (using the metal rods as gauges) and cut to 4 1/4" long by 1" wide bars. Code numbers and specimen numbers are stamped on each bar (these are needed to enter data into Insight-live). For examle, notice that the bars have specimen numbers from 1 to 6. These will be fired at six different temperatures (for a low temperature body, for example, we fired cone 06, 04, 03, 02, 01, 1, 2). The data measured from each, including the temperature, will be entered for the specimen to which it pertains in the Insight-live recipe corresponding to the code number stamped on this bars. The 12cm dia. disk is being cut from 3/16" thickness. Notice how the clay tears as cut, this is an indication of low plasticity. The greenish color is typical of terra cotta clays.

Identifying throwing tests of clay bodies

If you are doing testing, and everyone should be testing body and glaze variations, then your ware needs to be identified. Do that with a code number that cross references into your documentation in your account at Insight-live.com.

Stamp used for stamping information onto clay test bars

This type of stamp is deal for stamping mix and ID information on SHAB (and many other test types) clay test bars. Set up the run or recipe number on the left and the specimen number on the right.

Every studio, lab, classroom needs a good label printer

This is an Epson LW-600P (replaced by the LW-PX400 in 2021, but still available on eBay). It generates durable water-proof labels that are perfect for identifying buckets and jars of materials and glazes. Apps are available for iOS, Android, Windows and Mac. You can insert a QRCode on to a label (perfect for taking someone to an SDS or information page). Insight-live emphasizes assigning unique code numbers to all recipes you create and maintain, this is the perfect way to prominently display it. We find the yellow 18mm labels work well to display code numbers (the white 22mm for detail). The cartridges snap in in seconds so it is easy to change them. While the printer does support blue-tooth, enabling anyone with a phone to use the device, for routine label-making it works best when USB-connected on a desktop computer (the app works better and there is no waiting).

Here's how we used to record test results before insight-live.com

An example of how a potter presents side by side glaze recipe tests

Side-by-side presentation. That’s the best. But I magine if you could put, side by side; the recipes, pictures, notes, data, of any recipe test you had ever done. Even results of testing you did on commercial prepared glazes and glaze combinations. And be able to link, search, print, share them. That’s what you do in Insight-live. Pottery has always been about the data, we just let that information die before! Now we can learn so much more from it. Photo courtesy of Brielle Rovito, Burlington, Vermont, USA.

Links

Glossary Insight-Live
A database website where potters and ceramic technician account holders enter their recipes, materials, pictures, test procedures, firing schedules, etc.

By Tony Hansen


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