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Marcia Selsor

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Posts posted by Marcia Selsor

  1. The first ceramics in Japan: Jomon Ware. The very first examples of earthenware in the world were produced 12,000 years ago in the form of Jomon Ware, Japan’s very first ceramic products. Various kinds of pottery were produced ranging from products rolled in straw rope to produce patterns to figurines.
    History | Explore Japanese Ceramics


    another source claims 16,000 years ago. see photos

  2. Kiln tidbits:

    Oldest known kiln dates back to 6000 B.C. Located in Yarim Tepe archeological site in modern day Iraq.

    Oldest known kiln usage dates back to 12,200 B.C.: known as Neolitic (Stone Age) kiln. It has been estimated that the top firing temperature of these kilns reached 1652F. Neolitic civilization occupied what is known today as the West Bank.

    what about Yomon pottery in Japan?

  3. Jpdes,

    The coloranst were sodium dichromate ***toxic, calcium chloride, and cobalt cl

    Gloried firedto 1300 F held fir 5 minutes in aluminum foil sagger. The Riggs fire ceramic saggar she which are using combustibles in the saggars which need a higher temperature to burn off compared to fuming salts in aluminum foil. Also the foil breaks down around 1400F. Yes it is a halo effect.


  4. I was recently at the Bray event which is an annual fundraiser. There was an auction for cups, and auction of residents' work, a silent auction of past residents and the live auction of about 15-20 pieces...none of which sold for less than $4000. Artists in that auction included Patty Warashina, Josh deweese, Kurt Weiser, a  Beth Lo and Stephen Lee collaborative piece. The highest was about $12,000. It was amazing.


  5. I wear loose comfortable pants. I have apron chaps I got at NCECA decades ago, Also have several aprons. towel on the side of the table by my wheel, old shoes.

    My new studio is right off the kitchen and laundry room. I have several small rugs for wiping the dust off on the way back to the living area.And then as shown in my avatar,  I sometimes look like a disco Darth Vadar when I am firing.


  6. Adelaide Alsop Robineau (b Middletown, CT, 9 April 1865; d Syracuse, NY, 18 Feb 1929) was the publisher of Keramic  Studio Publishing Co which began publishing the periodical for potters in 1899 up to 1919.She began making pottery herself shortly after that. Frederick Hurten Rhead(1880–1942) recruited Robineau and Taxtile Doat to teach University Art Pottery 1910-11.She was the first to publish Taxile Doat's treatise "Grand Feu Ceramics" into English.  She taught at Syracuse University fro 1920-1929. After her death The Syracuse National Ceramics competition for initiated in her memory. The Everson Museum of Art in Syracuse has a great ceramics collection thanks to this long running competition. 

    While she was working in St. Louis she created some of her best pieces including the Scarab Pot which took 1000 hour to carve.

    here is Tom's ink http://tfaoi.com/aa/4aa/4aa484.htm



    complete digitized set from the Smithsonian Institute http://library.si.edu/digital-library/book/keramic-studio


    Frederick Hurten Rhead (1880–1942) was educated in the pottery district of Staffordshire, England. Worked at the University Art Academy in St Louis, worked for Roseville Pottery  designed Fiesta ware for Homer Laughlin China Company





  7. Are there any tables for pouring slip into the molds, or slip mixing equipment. If not and it is the molds , kiln furniture and kilns, $1500 may be about right. I noticed some broken kiln shelves. Old small jars of glaze or underglazes. The molds from that long ago could have some appeal to grad students in some places working with pop culture imagery. I think $500 for an old Duncan in good shape may 

    you could split it up, go through the molds and organize them according to subject.If you get one of the 2 kilns, it may be less than $1500, maybe more like $1000.Molds may vary a lot depending on their condition and what they are molds for, If there are cones, they are worth more than the glazes. I think I saw some part of slip casting equipment and also par of a banding wheel. Those types of pieces of equipment can bring in more. 



  8. Sounds great for your source of clean recycled vegetable oil. I got my residential burners at the campus dump for free at Carbondale , Ill. They included a pump, 1 nozzle, pressure gauge, and blower with motor. 

    We added 2 more nozzles to control varying BTUs as needed to climb. The nozzles could be used individually tr in combination. We used 0.75, 1.5 and 3.0  gallons per hour. Clinkers come from cold air getting sucked in as secondary air. Also inefficient burning of the oil. You may not run into that with clean vegetable oil. There is very good info in these articles. You could contact Studio potter magazine to see if you can get copies. The alternative fiuels issue was the second issue in 1973 I believe. The book is an Anthology of the first 6 or 7 years. 



  9. Too bad you didn't know Bill Weaver from Western Kentucky University in Bowling Green. His backyard was full of experimental kiln. One thing he did was filter waste oil using Charcoal briquettes in a coffee can along the drip system. Looked like IV unit. I have only fired with diesel oil #2, but I know you need a lot more space in the combustion area for oil than you do for gas. Did you get any clinker build up at high temperatures. That comes from inefficient combustion and can really build up significant mass of rock hard carbon in the combustion chamber. I used a converted household furnace burner with a pump for 100 lb pressure through a nozzle with electrodes for spark ignition. 

    There is a whole chapter dedicated to oil in the Studio potter book published in 1978 including one by Dennis Parks, Ann Standard, Paul Soldner and my article. 

    Here are a few jpgs.










  10. I agree, Mark. I did my research and production of crystalline glazes in the early 70s. I research the library at U of Ill. Ceramics Engineering in the basement where there were kiln logs and notes from the early 1900s. Great source of information. I used a pyrometer. In the early 1900s Adelaide Robineau's husband, Sam, fired her crystalline glazes by eye. Later went blind from that. There were some amazing glazes created in the Arts and Crafts era around central Illinois and St. Louis.


  11. I would say no just from my past experience with crystalline glazes (MFA thesis topic) . 

    The crystalline glaze is a zinc base and very specific chemistry to make crystals. Combining with another glaze would change everything. 

    The glaze must be very fluid to begin with. Adding something else would change that too. 

    I am sure Glazenerd will chime in here.



  12. Chilly,

    Good point. I didn't suggest a firing schedule. Not sure what a soft fire is before doing a bisque.

    I agree with Chilly that a programmable computer controller would be great. You would plug your kiln into it and have the controller mounted on the wall and plugged into 220, Check with an electrician. 

    Manually, my schedule from the past had been 2 hours on low, 2, on medium and then turn on high until temperature is reached.I still recommend using cones and pyrometer as a guide.





     I would mix up Marcia's recipe which has a coe of 6.36


    I'm getting 7.71, I checked all my formula % and they are spot on?


    attachicon.gifJul. 29, 2017.jpg

    i trust Ron Roy's adjustment. This is Sue Hintz clear adjusted by Ron Roy. I just use it. Ron Roy was the tech at Digitalfire and co author of Mastering Cone 6 glazes. I take his word on it compared to people playing with COE without testing.

    I have used this over several years wth no crazing....as recently as two weeks ago on a commission using Bray ^6 porcelain



    just sayin'




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