Although I have been using these clays, slips and glazes for quite some time you should always test first!

Measure twice, mix once.
- ancient UNL Proverb

CLAY

Base Recipe
Red Art- 60
Fire Clay- 15
Gold Art- 15
Wollastonite- 5
Silica- 5
________
100

Bundge Wollastonite in water before adding
1/4 cup Barium Carbonate to prevent scumming
Grog to taste- 7%- 18% a variety of mesh sizes works best for particle packing. (depending on how large, thick and strong your work needs to be)

Adjustments
If I have access to either Lizella or Ranger Red Clay (earthenware clays) and/ or Red Brick Grog (from Laguna CA) I will adjust my recipe to be:

Red Art- 40/50
Lizella or Ranger- 20/10
Fire Clay- 15
Gold Art- 15
Wollastonite- 5
Silica- 5
________
100
7-10% Red Brick Grog

SLIPS

Pete Pinnell’s WHITE SLIP
OM4 Ball Clay- 40
Talc- 40
Silica- 10
Neph Sye- 10
_________
100

7% zircopax

* For thin dunking slip, use 10-15% zircopax
* mix this slip on the thick side because the neph sye and sodium creates a slight defloculation…wait 24 hrs before fine tuning.

Pete Pinnell

KARI’S COLORED SLIP BASE
OM4 Ball Clay- 40
*Wollastonite- 40
Silica- 10
Neph Sye- 10
_________
100

Frit 3124 12%
Stain of Choice 12%

*This is the same slip as above except for the wollastonite substitution. This is nescessary for good color response.
*Blunge wollastonite in water first.

KARI’S BEST BLACK SLIP
Red Art- 40
EPK- 5
Wollastonite*- 25
OM4 Ball Clay- 20
Silica- 5
Neph Sye 5
_________
100

Cobalt Oxide 4%
Black Iron Oxide 12%
Black 6666 10%
Frit 3124 10%

*This slip is quite metallic. I do not use it in large amounts.
*As you can see it pulls nicely under many of my glazes.

GLAZES
*I fire most of these glazes to cone o3 in a computer kiln.
*I fire my kilns with visual cones just like one would a gas kiln.
*These glazes can be quite runny at this temperature so I always leave myself a bit of wiggle room for the glaze to move…sometimes I fire on cookies.

WOODY’S BASE (from Woody Hughes)
Gerstley Borate- 26
Lithium Carb.- 4
Frit 3124- 30
Neph Sye- 20
EPK- 5
Silica- 10
Calcined EPK- 5
_________
100

*This glaze works great with mason stains.
*7% mason stain will usually produce a good transparent glaze.
*The lithium will crystalize over time, especially if the glaze gets cold or freezes.

Clear
Red iron oxide 1%

Icy Blue
Silica 3%
Copper Carb 0.4%

Grape
Lobster Red 6026 3%
Blackberry Wine 6381 3%
Manganese dioxide 1%

Pink
Shell pink 6000 7%

*the dishes below show the icy blue in the back, pink in the front and the grape glaze on the bare clay ribbon handles.

KARI’S BEST
Frit P-626 -25
Frit 3124- 15
Gerstley Borate- 15
Spodumene- 18
Wollastonite- 7
EPK- 20
__________
100

Emerald Green
Copper Carb 6%

Blue
Cobalt Carb 1.5%
Copper Carb 2%

Maroon
Manganese dioxide 7%
Copper Carb 0.5%

Soft Lime Green
Chrome oxide 0.125%
Vanadium Yellow 6440 0.5%

Chartreuse
Chrome oxide 0.125%
Vanadium Yellow 6440 5%

SS MOSSY GREEN (UNL Grad. Sean Scott version of Pete’ s Best)
Frit P- 626- 22
Gerstley Borate- 31
Spodumene- 18
Kaolin- 18
Silica- 11
_________
100
3.5% Red Iron Oxide
2.5% Copper Carbonate

*Above you can see the Mossy Green with Icy Blue
*Depending upon your copper and RIO you may have to back off on the percentages as the glaze can get a little too metallic.
*This glaze looks good on its own and great both over and under Woody’s Icy Blue.

KARI’S YELLOW
Frit P-626- 12.5
Frit 3124- 22.5
Gerstley borate- 20.5
Spodumene- 9.0
Wollastonite- 3.5
EPK- 15.0
Lithium Carb- 2.0
Neph Sye- 10.0
Silica- 5.0
__________
100.0

Naples Mason Stain 2.0
Vanadium Yellow Mason Stain 5.0

GAIL KENDALL’S AMBER
Gerstley Borate - 35.52
Custer Feldspar- 34.58
Barium Carbonate- 13.08
Silica- 10.28
Black Iron Oxide- 6.54
___________
100.00

Gail Kendall

MERE KARI CLEAR
(aka SWO…Meredith Brickell and I revised this glaze)
Frit 3124- 59
Frit P-626- 14
Neph Sye- 11
Silica- 10
EPK- 6
_________
100

Veegum T 1.6
CMC gum 0.6
*This glaze is great with mason stains…7%-15%

kari and meredith

DAM MAJIK MAJOLICA
Frit 3124- 57.21
EPK- 14.87
Frit 3110- 13.73
Zircopax- 13.73
Frit 5301- 0.46
____________
100.00

Veegum T- 1.6%
CMC gum- 0.6%

* You can use 7% of most any mason stain to tint this glaze.

KARI’S CASTING SLIP NOTES

KARI’S TERRA COTTA
CASTING SLIP

(50 lb Casting Slip: this fits into a 5 gal bucket)

Red Art- 30
Ball Clay- 15
Talc- 2.5
Silica- 2.5
Distilled Water- 2.5 gallons + 3 cups of water (use this to dissolve soda ash and barium carbonate).
Barium Carb- 68 grams
Soda Ash- 23 grams (0.1%)
Darvan-811- 98 grams

Directions
1) Put Distilled Water in tall 5 gallon bucket
2) Dissolve Soda Ash and Barium Carbonate in 3 cups of distilled water and pour in bucket.
3) Add Darvan-811 to bucket
4) Add Ball Clay to bucket and blunge.
5) Add Red Art to bucket and blunge
6) Add Talc and Silica to bucket and blunge thoroughly.

notes:
20grams = 0.1%
10grams = 0.05%

KARI AND IAN CASTING SLIP
LOW FIRE WHITE
(this is Pete Pinnell’s Low Fire White Slip Defloculated)
(50 lb Casting Slip: fits in tall 5 gal bucket)

Ball Clay- 20
Talc-20
Neph Sye-5
Silica-5
Distilled Water- 2.5 gallons + one pint of water (use this to dissolve soda ash).
Soda Ash- 23 grams (0.1%)
Darvan-7- 125.5grams

Directions
1) Put Distilled Water in tall 5 gallon bucket
2) Dissolve Soda Ash in a pint of Distilled water and pour in bucket.
3) Add Darvan-7 to bucket
4) Add Ball Clay to bucket and blunge.
5) Add Talc, Neph Sye, and Silica to bucket and blunge thoroughly.
6) Finally, if necessary add Darvan-7 in 5 gram increments until the casting slip seems right.

notes:
20grams = 0.1%
10grams = 0.05%
never add more than 205 grams Darvan-7. If you go this far, then you did something wrong somewhere else.

KARI’S PLASTER NOTES (via Ian Anderson)

SUPER FORMULA

1 quart of water needs 3lbs of plaster

1) Measure width, length, and height of space. Multiply these numbers together:
This is your TOTAL VOLUME.
2) Divide TOTAL VOLUME by 80. This gives you how many quarts of water you need.
3) Multiply quarts of water by:
3lbs. plaster for normal shit.
2.85lbs. plaster for slip casting shit.
2.75lbs. plaster for really absorbent softer shit.
This gives you how much plaster you need for your water.

To find how much plaster you need for a space AND you can measure your object:

1) Measure width, length, and height of space. Multiply these numbers together:
This is your TOTAL VOLUME.
2) Measure width, length, and height of object you are casting. Multiply these numbers together:
This is your OBJECT VOLUME.
3) Subtract OBJECT VOLUME from TOTAL VOLUME:
This tells you the VOLUME OF PLASTER YOU NEED.
4) Divide VOLUME OF PLASTER YOU NEED by 80:
This gives you how many quarts of water you need.
5) Multiply quarts of water by:
3lbs. plaster for normal shit.
2.85lbs. plaster for slip casting shit.
2.75lbs. plaster for really absorbent softer shit.
This gives you how much plaster you need for your water.

Ian Anderson teaching at Penland School of Crafts