Saturday, October 15, 2011

Cone 6 Oxidation Results Group 6

 Cone 6 Oxidation Results Group 6

All of the results below for Cone 6 glazes were achieved with the use of a cooling cycle.  See the following link for details:
Cone 6 Oxidation Results Group 5

Links to Cone 6 Groups 1 - 4 without controlled cooling.

Group 1

Group 2

Group 3

Group 4
33C

33 - Blue Green/Copper Red Cone 6 

           

Talc                            3.3%

Whiting                       14.29%

Frit 3134                     13.33%

Kona F-4 Feldspar      46.16%

EPK                             6.4%

Flint                              16.52%

Tin Oxide                     2.24%

Zinc Oxide                   4.3%

Black Copper Oxide    1.07%




  33C over 87
 
33 - Blue Green/Copper Red Cone 6 

           

Talc                            3.3%

Whiting                       14.29%

Frit 3134                     13.33%

Kona F-4 Feldspar      46.16%

EPK                             6.4%

Flint                              16.52%

Tin Oxide                     2.24%

Zinc Oxide                   4.3%

Black Copper Oxide    1.07%

87 - Zinc Semi-matte/Glossy Base Glaze Sea Green C/6       

           

Neph Syenite              36%
Wollastonite                13%

Zinc Oxide                  10%

EPK                            10%

Silica                          31%

Cobalt Carbonate        1%

Rutile                          6%



38C 
38 - Nutmeg C/6        



Dolomite                     23.3%

Spodumene                 23.3%

Frit 3134                     6.8%

Ball Clay OM4            23.3%

Flint                             23.3%

Red Iron Oxide           1.07%

Yellow Ochre              3.24%

Tin Oxide                    4.85%

Bentonite                    2%

 
 43C

43 - Kaki with Gillespie Borate C/6  

           

Gillespie Borate          27%

Flint                             25.3%

Custer Spar                 16.9%

Talc                             11.8%

EPK                            4.2%

Red Iron Oxide           12.8%

Bentonite                    2%




 46C

46 - Woo Yellow C/6 

           

Nepheline Syenite       35.64%

Strontium Carbonate  20.06%

Zircopax                      16.16%

Dolomite                     12.95%

Silica                           7.59%

EPK                            7.59%

Red Iron Oxide           3%

Bentonite                    4%

Epsom Salts                1%




56C over 84

56 - Bee's Green C/6  

           

Gillespie Borate          40.3%

Strontium Carb           0.2%

Talc                             9.9%

Zinc Oxide                  0.1%

Custer Spar                 20.1%

EPK                            10.6%

Silica                           18.8%

Tin Oxide                    2%

Copper Carb                2%

Cobalt Oxide             0.8%

Red Copper Oxide       2%

Rutile                          4.8%
 
 
84 - Glossy Base 1  C/6 Light Stormy Blue  

           

G-200 Feldspar           20%

Frit 3134                     20%

Wollastonite                10%

EPK                            20%

Talc                             11.5%

Silica                           18.5%

Cobalt Carbonate        1.%

Rutile                          4.5%


 70C
70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%


 
70C over 12

70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%

 
12 - Jen's Juicy Fruit Variation Whiting C/6  
           
EPK                            9%
Gillespie borate           10%
Nepheline syenite        50%
Flint                             7%
Wollastonite                15%
Lithium carbonate       9%
Soda ash                      10%
Titanium dioxide         5%
Black iron oxide          6%



70C over 56
 
70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%

56 - Bee's Green C/6  

           

Gillespie Borate          40.3%
Strontium Carb           0.2%
Talc                             9.9%
Zinc Oxide                  0.1%
Custer Spar                 20.1%
EPK                            10.6%
Silica                           18.8%
Tin Oxide                    2%
Copper Carb                2%
Cobalt Oxide             0.8%
Red Copper Oxide       2%
Rutile                          4.8%


70C over 87

70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%

87 - Zinc Semi-matte/Glossy Base Glaze Sea Green C/6       

           

Neph Syenite              36%
Wollastonite                13%
Zinc Oxide                  10%
EPK                            10%
Silica                          31%
Cobalt Carbonate        1%
Rutile                          6%




 70C over 121

70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%
 
121 - Transparent C/6 Almost Black 

Potash Spar                 44%
EPK                            6%
Bentonite                    2%
Lithium Carb               4%
Whiting                       14%
Zinc Oxide                  5%
Silica                           24%
Black Iron Oxide        12%



 70C over 132

70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%

132 - Blue Green Sugar Maples Cone 6        

Talc                             3.3%
Whiting                       14.3%
Frit 3134                     13.3%
Minspar                       46.2%
EPK                            6.4%
Silica                           16.5%
Tin Oxide                    2.4%
Zinc Oxide                  4.4%
Black Copper Ox        1.1%
Bentonite                    2%




70C over 159 

70 - Raspberry C/6     

           

Whiting                       20%
Neph Syenite              18%

Frit 3134                      14%

Om-4 Ball Clay           18%

Silica                           30%

Green Chrome Ox       .02%

Tin Oxide                    7.5%

159 - Carmen's Turquoise C/6
           
Neph Syenite              52.8%
Whiting                       1.9%
Strontium Carb           30.2%
EPK                            8.5%
Flint                             6.6%
Copper Carb                4.3%
Bentonite                    3%






Friday, October 14, 2011

Cone 6 Oxidation Results Group 5

 Cone 6 Oxidation Results Group 5

Thus far I have batched over 120+ different glazes in 300 gram batches, the formulas for which have been found from publicly available sources.  After firing these tests in an electric kiln to Cone 6, I have photographed each and am making them available to potters with the accompanying formulas.

One difference with this Group 5 is that I have introduced a cooling cycle to the firing.  The cycle is as follows and the firing is accompanied by a Cone 6 witness cone.  After 12 consecutive firings, the witness cones are identical from firing to firing.

The firing cycle:


Rate                          Temp                   Hold Time

rA1= 360 F1 = 900 0

rA2= 300 F2 = 1800 0

rA3 =200 F3 = 2016 0

rA4 = 108 F4 = 2197 0.3

rA5 = Full F5 =1800 0

rA6 =150 F6 = 1300 0

rA7 = 0000

  
To summarize, I fire at a rate of 360/hr to 900 degrees F, then at 300 degrees/ hr to 1800 degrees F, 200 degrees/hr until 2016 degrees F is reached, then 108 degrees/hour to 2197 at which time I hold it at that temperature for 30 minutes.  

The kiln is shut off until a temperature of 1800 degrees F is reached and then turned on to slow the rate of cooling to 150 degrees/hr until 1300 degrees F is reached.  At this point the kiln is turned off and cools naturally.  

I use a Vulcan kiln controller attached to a Paragon QA11 test kiln.  The combination of new elements in the Paragon and new thermocouple and controller has produced consistent heat work from one firing to the next.



Links to Cone 6 Groups 1 - 4 without controlled cooling.

Group 1

Group 2

Group 3

Group 4

 Group 5 results with controlled cooling.

1C (C denotes controlled cooling)

#1        Jen's Juicy Fruit Variation (Red Matte) C/6  

                       

            EPK                             10%

            Gillespie borate             9%

           Nepheline syenite         49%

            Flint                             12%

            Whiting                        11%

            Lithium carbonate       9%

            Soda ash                      10%

            Titanium dioxide         5%

            Red iron oxide             10%

 2C

#2 - Jen's Juicy Fruit Variation 2 (Red Matte) C/6        

             
EPK                             10%

Gillespie borate           9%

Nepheline syenite        49%

Flint                            12%

Whiting                        11%

Lithium carbonate       9%
Standard Ceramic's #487 Red Stain    10%
Soda ash                   10%

Titanium dioxide         5%

 #2 normal cooling same formula




3C

3 - Pete's Tomato Red #3 C/6     

           

Kona F-4 (Minspar)    33.7%

Frit 3134                     9.8%

Bone ash                     10.7%

Whiting                       3.8%

Magnesium carb          5.9%

EPK                            12.5%

Flint                             23.7%

Bentonite                      2%

Red iron oxide              8%

 4C
 
4 - Tomato Red #13 C/6        

           

Frit 3134                      10.8%

Nepheline syenite        23.1%

Bone ash                          10%

Magnesium carb          6.2%

Whiting                        7.7%

EPK                               21%

Flint                              21.2%

Bentonite                       2%

Red Iron Oxide                10%

#4 without cooling cycle.


5C with cooling cycle

5 - Tomato Red #13 Pumpkin Orange C/6    

           

Frit 3134                    10.8%

Nepheline syenite        23.1%

Bone ash                         10%

Magnesium carb          6.2%

Whiting                       7.7%

EPK                              21%

Flint                             21.2%

Bentonite                      2%

Red Iron Oxide               10%

Rutile                            2%

#5 without cooling cycle.


6C with cooling cycle.

6 - Tomato Red #13 with spodumene C/6     

           

Frit 3134                      11%

Spodumene                  11.2%

Bone ash                      7.9%

Magnesium carb          6.3%

Whiting                        7.9%

EPK                             21.6%

Flint                              21.7%

Neph Syenite               11,8%

Bentonite                     2%

Red Iron Oxide           10%

 6 - without cooling cycle.


8C - with cooling cycle.

8 - Jen's Juicy Fruit Variation (Red Matte) Cone 6   

           

EPK                            10%

Gillespie borate           9%

Nepheline syenite        49%

Flint                             12%

Whiting                       11%

Lithium carbonate       9%

Soda ash                      10%

Titanium dioxide         5%

Black Iron Oxide        6%

 8 - without cooling cycle.



12C - with cooling cycle.

12 - Jen's Juicy Fruit Variation Whiting C/6  

           

EPK                            9%
Gillespie borate           10%
Nepheline syenite        50%
Flint                             7%
Wollastonite                15%
Lithium carbonate       9%
Soda ash                      10%
Titanium dioxide         5%
Black iron oxide          6%

 12 - without cooling cycle.







18C - with cooling cycle.

18 - Jade Green C 5/6

           

G200                           38.1%

Barium Carbonate       19%

EPK                            9.6%

Flint                             9.5%

Gillespie Borate          9.5%

Zinc Oxide                  9.4%

Copper Carbonate       4.9%

 18 - without cooling cycle.

Friday, September 30, 2011

Potters Tour in Western Pennsylvania Oct. 15-16


Nine potters' studios will be open for viewing, demonstrating, and selling Saturday and Sunday, October 15 and 16th.  Go to the link above for complete information.

This is a wonderful way to spend a Fall weekend day going from studio to studio which are generally 15 to 20 minutes apart.  Meet some interesting artisans and see and buy some outstanding work.

Tuesday, September 27, 2011

List of the Smithsonian Artist Interviews Awaiting Transcription

List of the Smithsonian Artist Interviews Awaiting Transcription or on Microfilm
Archives of American Art's Nanette L. Laitman Documentation Project for Craft and Decorative Arts in America

Link to Smithsonian’s Oral History Interviews

No live links.

Bennett Bean
Scheduled for transcription.

Paulus Berensohn
Scheduled for transcription.

Don Reitz
Scheduled for transcription.

Edward Eberle
Scheduled for transcription.

Rudolf Staffel
Interview not posted.

Tashiko Takaezu
Interview not posted.

Ken Price
Interview not posted.

Henry Varnum Poor
Transcript: Patrons must use microfilm copy.

Tony Marsh
Scheduled for transcription.

Laura Anderson
Transcript: use requires an appointment.

Charles Fergus Binns
Microfilm reels 3606 through 3611 available at Archives of American Art offices and through interlibrary loan.

Harding Black
Microfilm reels 2245 & 2250 available for use through interlibrary loan.

Aaron Bohrod
Microfilm reels 1794-1797 available at Archives of American Art offices and through interlibrary loan.

Anne Currier
Scheduled for transcription.

Ruth Duckworth
Interview not posted.

Edris Eckhardt
Interview not posted.

John Glick
Interview not posted.

Wayne Higby
Tapes.  Use requires an appointment.

Annelies Ruth Kahn
Microfilm roll 2889 available at Museum of Fine Arts, Houstonand through interlibrary loan.

Luman Pierre Kelsey
Microfilm reel D23 available for use at Archives of American Art offices and through interlibrary loan.

Richard Mower – did a series of video taped workshops of potters.  Part of the “Making it in Clay” series done at Montgomery College from 1978 to 1981.
Unmicrofilmed: use requires an appointment.

Otto Natzler
Transcript: Use requires an appointment.

Richard Notkin
Scheduled for transcription.

Antonio Prieto
Use requires an appointment.

Viktor Schreckengost
Microfilm reel 1078 available at Archives of American Art offices and through interlibrary loan.

Evaline C. Sellors
Microfilm reels 2080-2081 available for use through interlibrary loan.

Ken Shores
Scheduled for transcription.

Mary Chase Stratton
Microfilm reels 593, 1010 & 1021 available for use at Archives of American Art offices and through interlibrary loan.

Akio Takamori
Scheduled for transcription.

Frans Wildenhain
Untranscribed; use requires an appointment.

Marguerite Wildenhain
Untranscribed; use requires an appointment.

Paula Winokur
Scheduled for transcription.


Bob Winokur
Scheduled for transcription.

Betty Woodman
Scheduled for transcription.

Sunday, September 25, 2011

Links to the Smithsonian Artist Interviews

Links to the Smithsonian Artist Interviews
Archives of American Art's Nanette L. Laitman Documentation Project for Craft and Decorative Arts in America

Link to Smithsonian’s Complete Oral History Interviews

I have posted below the links to completed transcripts and also a photo of each artisan's work.  In a separate posting I will list other potters/ceramic artists who have been interviewed but not yet transcribed.  Those will be added in the future when the Smithsonian makes them available.

 Potters/Ceramic Artists

Robert Arenson




Rudy Autio



Ralph Bacerra



Cynthia Bringle


 
Fong Chow



 
Val Cushing  



 William Daley



Eddie Dominguez


 
Michael and Magdalena Suarez Frimkess


 
Otto and Vivika Heino


 
Jun Kaneko


 
Karen Karnes


 
Marilyn Levine




Warren MacKenzie




John Mason




Nan McKinnell



Jim Melchert



 
Ron Nagle




Susan Peterson




Frances Senska



Dave Shaner





Peter Shire



 
Paul Soldner



 
Robert Sperry



Robert Turner

  

Patti Warashina





Kurt Weiser



Beatrice Wood Interview age 83

Beatrice Wood Interview age 99



Wednesday, June 8, 2011

Open Studio Sale, Robyn's Nest Pottery

Open Studio Sale Robyn's Nest Pottery


June 11 & 12, 10-5pm
404 Limestone Court Plum, Pa




Come visit the studio of Karen Mckee with guest potter Christy Culp


Porcelain and Majolica pottery for everyone!