# Pottery

Pottery @ ENTS

# Glaze Recipes

# Randy's Clear glaze Recipe

You need about 10kg to fill a 5 gallon bucket. I would suggest you try a test first. I’ve been testing a similar clear base from “mastering cone 6 glazes” ;

Materials Amt   
PPS Fusion Frit F-12 25.00  
PPS Feldspar Custer Potash 22.00  
PPS EPK 18.00  
PPS Silica 295 mesh 26.00  
PPS Talc Silverline 303 5.00  
PPS Whiting (Calcium Carbonate) <span style="text-decoration: underline;"> 4.00 </span>  
Total: 100.00  
I’ve modified it to change from frit 3134 to f-12 as 3134 may be very difficult to get in the future.

For every 100gm of dry materials start with 85 gm of water.

Date April 1 2024 - Will be setting up a small batch first as Randy suggests.

# AB Slip Blue Rutile Plus Cobalt Carb

Recipe sourced from [https://glazy.org/recipes/121839](https://glazy.org/recipes/121839)

Target SG is 1.45, this is a dipping glaze at that. It does tend to settle quickly, so mix well before you dip. It needs a fairly thick application, it can crawl a little or turn brown if it's not applied thickly enough.

This is a Cone 6 glaze

[![PXL_20230416_164214139.jpg](https://docum.ents.ca/uploads/images/gallery/2024-11/scaled-1680-/pxl-20230416-164214139.jpg)](https://docum.ents.ca/uploads/images/gallery/2024-11/pxl-20230416-164214139.jpg)

## Recipe

<div id="bkmrk-material-amount-albe"><div class="overflow-x-auto"><table class="print-table-row table-auto w-full" style="width: 58.7654%;"><thead><tr class="text-right text-sm text-gray-500 dark:text-gray-400"><th class="px-2 py-1" style="width: 67.907%;">Material</th><th class="px-2 py-1" style="width: 32.093%;">Amount</th></tr></thead><tbody><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 67.907%;">  
<div class="sm:mt-1">[Alberta Slip](https://glazy.org/materials/15016)</div></td><td class="p-1" style="width: 32.093%;">80.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 67.907%;">  
<div class="sm:mt-1">[Ferro Frit 3134](https://glazy.org/materials/15169)</div></td><td class="p-1" style="width: 32.093%;">20.00</td></tr><tr class="gcss-tr-total text-sm"><td class="px-2 py-1 text-left" style="width: 67.907%;">Total base recipe</td><td class="px-2 py-1" style="width: 32.093%;">100.00</td></tr><tr class="text-base sm:text-lg gcss-tr-add"><td class="p-1 flex justify-between content-center" style="width: 67.907%;">  
<div class="flex justify-end sm:mt-1">[<svg class="inline h-4 w-4 sm:h-5 sm:w-5" height="1.2em" viewbox="0 0 24 24" width="1.2em"><path d="M12 4v16m8-8H4" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path></svg> Rutile](https://glazy.org/materials/15393)</div></td><td class="p-1" style="width: 32.093%;">4.00</td></tr><tr class="text-base sm:text-lg gcss-tr-add"><td class="p-1 flex justify-between content-center" style="width: 67.907%;">  
<div class="flex justify-end sm:mt-1">[<svg class="inline h-4 w-4 sm:h-5 sm:w-5" height="1.2em" viewbox="0 0 24 24" width="1.2em"><path d="M12 4v16m8-8H4" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path></svg> Cobalt Carbonate](https://glazy.org/materials/15114)</div></td><td class="p-1" style="width: 32.093%;">2.00</td></tr><tr class="gcss-tr-total text-sm"><td class="px-2 py-1 text-left" style="width: 67.907%;">Total</td><td class="px-2 py-1" style="width: 32.093%;">106.00</td></tr></tbody></table>

</div></div>

# Red Oilspot

Sourced from [https://glazy.org/recipes/36081](https://glazy.org/recipes/36081)

A cone 6 oil spot with red and black mottling

[![image.png](https://docum.ents.ca/uploads/images/gallery/2024-11/scaled-1680-/IfCimage.png)](https://docum.ents.ca/uploads/images/gallery/2024-11/IfCimage.png)

[![image.png](https://docum.ents.ca/uploads/images/gallery/2024-11/scaled-1680-/Klnimage.png)](https://docum.ents.ca/uploads/images/gallery/2024-11/Klnimage.png)

The inside is straight red oilspot. The running blue-to white comes from layering a band of Spectrum Running Hot Chowder over it. It sure is running, but that's probably my favorite combo!

## Recipe

<div id="bkmrk-material-amount-mins"><div class="overflow-x-auto"><table class="print-table-row table-auto w-full" style="width: 98.7654%; height: 538.703px;"><thead><tr class="text-right text-sm text-gray-500 dark:text-gray-400" style="height: 29.7969px;"><th class="px-2 py-1" style="width: 85.7322%; height: 29.7969px;">Material</th><th class="px-2 py-1" style="width: 14.2678%; height: 29.7969px;">Amount</th></tr></thead><tbody><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 64.75px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 64.75px;">  
<div class="sm:mt-1">[Minspar 200](https://glazy.org/materials/15470)</div></td><td class="p-1" style="width: 14.2678%; height: 64.75px;">25.91</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 54.75px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 54.75px;">  
<div class="sm:mt-1">[Custer Feldspar](https://glazy.org/materials/15131)</div></td><td class="p-1" style="width: 14.2678%; height: 54.75px;">21.59</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 60.75px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 60.75px;">  
<div class="sm:mt-1">[EP Kaolin](https://glazy.org/materials/15137)</div></td><td class="p-1" style="width: 14.2678%; height: 60.75px;">15.11</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 55.75px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 55.75px;">  
<div class="sm:mt-1">[Ferro Frit 3195](https://glazy.org/materials/15171)</div></td><td class="p-1" style="width: 14.2678%; height: 55.75px;">13.82</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 13.75px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 13.75px;">  
<div class="sm:mt-1">[Red Iron Oxide](https://glazy.org/materials/15387)</div></td><td class="p-1" style="width: 14.2678%; height: 13.75px;">6.91</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 52.1875px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 52.1875px;">  
<div class="sm:mt-1">[Dolomite](https://glazy.org/materials/15135)</div></td><td class="p-1" style="width: 14.2678%; height: 52.1875px;">6.04</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 35.3906px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 35.3906px;"><div class="sm:mt-1">[Amtalc-C98 Talc](https://glazy.org/materials/15608)</div></td><td class="p-1" style="width: 14.2678%; height: 35.3906px;">6.04</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient" style="height: 141.781px;"><td class="p-1 flex justify-between content-center" style="width: 85.7322%; height: 141.781px;"><div class="no-print ingredient-image">[<div class="w-8 rounded-md">![Silica](https://ddms6z64wp3a6.cloudfront.net/uploads/recipes/00/s_15400.5a6a6c135b2e7.jpg)</div>](https://glazy.org/materials/15400)</div><div class="sm:mt-1">[Silica](https://glazy.org/materials/15400)</div></td><td class="p-1" style="width: 14.2678%; height: 141.781px;">4.58</td></tr><tr class="gcss-tr-total text-sm" style="height: 29.7969px;"><td class="px-2 py-1 text-left" style="width: 85.7322%; height: 29.7969px;">Total</td><td class="px-2 py-1" style="width: 14.2678%; height: 29.7969px;">100.00</td></tr></tbody></table>

</div></div>

# Honey Wheat

Sourced from

[https://glazy.org/recipes/36974](https://glazy.org/recipes/36974)

[![image.png](https://docum.ents.ca/uploads/images/gallery/2024-11/scaled-1680-/SVGimage.png)](https://docum.ents.ca/uploads/images/gallery/2024-11/SVGimage.png)

## Recipe

<div id="bkmrk-material-amount-sili"><div class="overflow-x-auto"><table class="print-table-row table-auto w-full" style="width: 75.0617%;"><thead><tr class="text-right text-sm text-gray-500 dark:text-gray-400"><th class="px-2 py-1" style="width: 70.1754%;">Material</th><th class="px-2 py-1" style="width: 29.8246%;">Amount</th></tr></thead><tbody><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[Silica](https://glazy.org/materials/15400)</div></td><td class="p-1" style="width: 29.8246%;">30.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[Dolomite](https://glazy.org/materials/15135)</div></td><td class="p-1" style="width: 29.8246%;">19.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[EP Kaolin](https://glazy.org/materials/15137)</div></td><td class="p-1" style="width: 29.8246%;">18.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[Spodumene](https://glazy.org/materials/15422)</div></td><td class="p-1" style="width: 29.8246%;">18.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[Ferro Frit 3134](https://glazy.org/materials/15169)</div></td><td class="p-1" style="width: 29.8246%;">10.00</td></tr><tr class="text-base sm:text-lg gcss-tr-ingredient"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="sm:mt-1">[Gerstley Borate](https://glazy.org/materials/15252)</div></td><td class="p-1" style="width: 29.8246%;">5.00</td></tr><tr class="gcss-tr-total text-sm"><td class="px-2 py-1 text-left" style="width: 70.1754%;">Total base recipe</td><td class="px-2 py-1" style="width: 29.8246%;">100.00</td></tr><tr class="text-base sm:text-lg gcss-tr-add"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="flex justify-end sm:mt-1">[<svg class="inline h-4 w-4 sm:h-5 sm:w-5" height="1.2em" viewbox="0 0 24 24" width="1.2em"><path d="M12 4v16m8-8H4" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path></svg> Manganese Dioxide](https://glazy.org/materials/15336)</div></td><td class="p-1" style="width: 29.8246%;">4.00</td></tr><tr class="text-base sm:text-lg gcss-tr-add"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="flex justify-end sm:mt-1">[<svg class="inline h-4 w-4 sm:h-5 sm:w-5" height="1.2em" viewbox="0 0 24 24" width="1.2em"><path d="M12 4v16m8-8H4" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path></svg> Bentonite](https://glazy.org/materials/15072)</div></td><td class="p-1" style="width: 29.8246%;">2.00</td></tr><tr class="text-base sm:text-lg gcss-tr-add"><td class="p-1 flex justify-between content-center" style="width: 70.1754%;">  
<div class="flex justify-end sm:mt-1">[<svg class="inline h-4 w-4 sm:h-5 sm:w-5" height="1.2em" viewbox="0 0 24 24" width="1.2em"><path d="M12 4v16m8-8H4" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path></svg> Red Iron Oxide](https://glazy.org/materials/15387)</div></td><td class="p-1" style="width: 29.8246%;">1.50</td></tr><tr class="gcss-tr-total text-sm"><td class="px-2 py-1 text-left" style="width: 70.1754%;">Total</td><td class="px-2 py-1" style="width: 29.8246%;">107.50</td></tr></tbody></table>

</div></div>

# G3806F - Fluid melt clear

Taken from [https://insight-live.com/insight/share.php?z=gbcM8HXmX2](https://insight-live.com/insight/share.php?z=gbcM8HXmX2) via digital fire

I like this clear over underglazes, as it is a cone 6 clear that is designed to stay fluid at firing temperatures for a while to let out any offgasing bubbles from the underglaze. Microbubbles from offgasing make underglaze designs appear cloudy or gray, this keeps the colours a bit brighter. That link has a variety of different recipe versions, most of which include additives for color I don't use in the clear version for dipping.

[![image.png](https://docum.ents.ca/uploads/images/gallery/2024-11/scaled-1680-/1gsimage.png)](https://docum.ents.ca/uploads/images/gallery/2024-11/1gsimage.png)

<table id="bkmrk-code-%23-g3806f"><tbody><tr><td>Code #

G3806F

</td></tr></tbody></table>

<table id="bkmrk-%C2%A0-materials-amt-%C2%A0-si"><tbody><tr><th class="RecipeReportTH" title="Phantom status (does not show up in chemistry calculations)"> </th><th class="RecipeReportTH">Materials</th><th class="RecipeReportTH">Amt</th></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Silica](https://digitalfire.com/material/silica)</td><td class="RecipeReportLine">23.500</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Wollastonite](https://digitalfire.com/material/wollastonite)</td><td class="RecipeReportLine">7.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Kaolin](https://digitalfire.com/material/kaolin)</td><td class="RecipeReportLine">10.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Strontium Carbonate](https://digitalfire.com/material/strontium+carbonate)</td><td class="RecipeReportLine">5.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Ferro Frit 3110](https://digitalfire.com/material/ferro+frit+3110)</td><td class="RecipeReportLine">22.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Ferro Frit 3249](https://digitalfire.com/material/ferro+frit+3249)</td><td class="RecipeReportLine">21.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Zinc Oxide](https://digitalfire.com/material/zinc+oxide)</td><td class="RecipeReportLine">3.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Spodumene](https://digitalfire.com/material/spodumene)</td><td class="RecipeReportLine">6.000</td></tr><tr><td class="RecipeReportLine"> </td><td class="RecipeReportLine">[Bentonite](https://digitalfire.com/material/bentonite)</td><td class="RecipeReportLine">2.500</td></tr></tbody></table>

# Processes

# Running a test fire

*This page is a work in progress.*

After some kiln repairs it may be required to run a test fire. Typically this will happen after a relay or element replacement to ensure the kiln is operating normally.

1. Empty the kiln, if not already done.
2. Place a shelf at each zone with pyrometric cones to record temperature. 
    - Each set of cones should consist of 1 below target temperature, 1 at target, and 1 above target.
    - No other pieces should be fired.
3. Run the kiln's program normally.
4. Record the runtime and cone behaviour.
5. Compare kiln performance against [Expected performance](https://docum.ents.ca/books/pottery/page/expected-performance "Expected performance").
6. Make repairs and [Troubleshoot](https://docum.ents.ca/books/pottery/page/troubleshooting "Troubleshoot") as required.

# Kilns

# Troubleshooting

### Disclaimer

**Do not perform troubleshooting without approval from the Board.**

### Manuals

[Bartlett V6-CF Manual.pdf](https://docum.ents.ca/attachments/13) (Jill - Blue kiln)

### Common symptoms for troubleshooting

- Firing duration is weirdly high
- Pieces are being fired inconsistently (some are over-fired, others under-fired, within the same firing)

**If you think something is going wrong in the kiln, check the relays first!**

### Relays

1. Disconnect power from the kiln
2. Note the wiring (take photos)
3. Remove the relays individually, testing them on the bench power supply 
    1. 3 terminals will receive power
    2. Connectivity when power is supplied should be present through the remaining sets of terminals
    3. Verify the relay pinouts to be sure on which terminals are used
4. Ensure all spade connections are tightly coupled. It should require fairly significant effort to disconnect the relays. Tighten with pliers as needed.

After replacing needed relays:

1. [Run a test fire](https://docum.ents.ca/books/pottery/page/running-a-test-fire "Run a test fire")
2. At approximately 100 degrees Celsius, do a paper/heat test on each element to confirm operation

### Kiln elements

1. Verify that the thermocouples look okay, not damaged, and no pieces or shelves are too close (this could cause a false positive).
2. Disconnect power from the kiln
3. Open the front control panel
4. Note the wiring (take photos)
5. Remove the screw terminal connectors which attach to the elements
6. Using a multimeter, record the resistance of all 6 elements
7. If any of the 6 elements are more than 10% out of spec, replace all elements (values are recorded below)

Replacing elements:

1. TODO

After replacing the elements:

1. [Run a test fire](https://docum.ents.ca/books/pottery/page/running-a-test-fire "Run a test fire")
2. At approximately 100 degrees Celsius, do a paper/heat test on each element to confirm operation

##### Jill (blue coneart) expected resistance values

<table border="1" id="bkmrk-element-nominal-in-s" style="border-collapse: collapse; width: 99.946%;"><colgroup><col style="width: 33.3784%;"></col><col style="width: 33.3784%;"></col><col style="width: 33.3784%;"></col></colgroup><tbody><tr><td>**Element**  
</td><td>**Nominal**  
</td><td>**In spec range**  
</td></tr><tr><td>1 (top)</td><td>14.2 Ohms</td><td>12.78 - 15.62 Ohms</td></tr><tr><td>2</td><td>17.9 Ohms</td><td>16.11 - 19.69 Ohms</td></tr><tr><td>3</td><td>17.9 Ohms</td><td>16.11 - 19.69 Ohms</td></tr><tr><td>4</td><td>17.9 Ohms</td><td>16.11 - 19.69 Ohms</td></tr><tr><td>5</td><td>17.9 Ohms</td><td>16.11 - 19.69 Ohms</td></tr><tr><td>6 (bottom)</td><td>14.2 Ohms</td><td>12.78 - 15.62 Ohms</td></tr></tbody></table>

# Expected performance

*This page is a work in progress.*

Each of the kilns has an "expected" runtime and temperature behaviour. These characteristics are recorded below. If the real world values start to drift from these expected values, perform [Troubleshooting](https://docum.ents.ca/books/pottery/page/troubleshooting "Troubleshooting").

### Jill (blue coneart)

TODO

### Jack (red skutt)

TODO