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Marcia Selsor

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About Marcia Selsor

  • Rank
    Professor Emerita, MSU-Billings, Advanced Member

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  • Location
    Red Lodge, Montana
  • Interests
    birdwatching, critter watching, fishing, cooking, travel, writing, civic engagement .
    Upcoming Events 2018

    Diagonal 11 Woodfiring Symposium at La Meridiana, June 17-June 30, Exhibition in Faenza June 30-July3,

    3rd Annual Ceramics Invitational, Radius Gallery, Missoula,  Montana May 10-June 18

    Alternative Firing Class , San Miguel de Allende, Mexico  Oct 8-12

    my website includes many "how-to" pages for making quick terra terra sig, to building raku kilns. http://www.marciaselsorstudio.com

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  1. Marcia Selsor

    recent soluble salts firing in saggars

    I can get several smaller saggars in my raku oil drum kiln. My new topcoat pulley kiln will hold a lot more. the interior is 31.5 x 27. .5 and 29 ht. This is the chamber for the pulleys. -upside down.
  2. Marcia Selsor

    are there any green food safe glazes

    I use a cobalt green glaze. I have used it on dinnerware. There is a photo of it on my gallery under the album Forum discussions. The recipe is there too. I am not navigating the new format well or I would give you a link. Recipe is from Michael Bailey's book. Cone 6 Oxidation.
  3. Marcia Selsor

    OM4 Ball Clay and soluble salts

    the barium is used to prevent scumming of the soluble salts migrating to the surfaces. It is a common additive to earthenware clay bodies. Most majolica painters I know who mix their own clay add this...or use to. Marcia
  4. Marcia Selsor

    Sea Pottery

    I lived in Spain and researched the folk pottery there. Adra is on the sea...your shard could be anything from Phoenician , Greek, Roman, Carthagian, Moorish, medieval or contemporary sea-washed earthenware. There is a great maritime museum in Cartagena , Spain. They have a great collection of amphoras and pots that came out the the bay right there. Just about every mediterranean culture traded by sea. You an find shards everywhere along the coast. Marcia
  5. Marcia Selsor

    Flaking burnished surface

    I use quick terra sig. Apply when bone dry and burnish with a soft makeup sponge or foam. recipe 250 grams of ball clay or any fine clay including red art into a liter of water in a plastic bottle. If digging clay, weigh 200 grams and ask for a few hours before mixing with the water. Shake well. Add a few drops of Darvon 7 or Darvon 833. Shake well. Let it settle for about 2 hours. Punch or slice a hole in the bottle above the line where the heavy materials settled. Drain into a container. Brush or spray onto the pot. Burnish with a soft sponge. Your clay should be smooth, no grog or very fine grog. ..fine enough that burnishing won't scratch the surface. Bisque to ^08 hold for an hour. If you over bisque terra sig, the smoke will not be absorbed. You might try smoking in a barrel or covered brick box. Use sawdust, charcoal briquets, and wood. There a is great video by Piepenburg on this method. The photo is Apache red clay terra sig, with feather burned onto surface. Marcia Selsor.
  6. Recent saggar firing with soluble salts. Fired in saggars in a raku kiln. Marcia
  7. Got  my 2 new raku kilns sprayed with rigidizer. Now they just need the kiln shed finished to get them protected from the weather. Last year it snowed -22" around Sept. 15th. First frost ( its late this year) is expected next weekend. Happy to have those kilns out of the studio. I now have 3 raku kilns outside the dining room patio door.  It makes it easy to read the pyrometer.3rakukilnssmall.jpg.26fc1b75a9b0421dd52ddab4ccaa9ae1.jpg

    1. Show previous comments  4 more
    2. Marcia Selsor

      Marcia Selsor

      My  extension to old wooden kiln shed weill have all metal clear story with windows and exhaust fans 2 barn doors and 14 ft ceiling slanting down to10 or 12'. I already have 4 kilns to go inside. My tiny demo kiln I built for taping my online courses. I have a sawed -ed oil drum with the tope third removed, a 2' high x 2'wide chamber to sit on brick plus my large pulley or topcoat kiln. Very excite to be able to fire in winter. BUT I do regret not being able to fire much this summer.


    3. Marcia Selsor

      Marcia Selsor

      maybe we should have a raku fest at my place before my husband retires and comes home permanently!


    4. terrim8
  8. http://www.greatclay.com/Merchant2/merchant.mvc, https://www.chicagoceramicsupplies.com, https://www.yelp.com/biz/krueger-pottery-supply-saint-louis, https://uspigment.com, http://www.brickyardceramics.com/acatalog/index.html Here's a few: 2 near Chicago, one in St. Louis, on near Indianapolis and US pigments as mentioned above. Marcia
  9. Marcia Selsor


    This was my first solo kiln built in upstate NY using recycled hard bricks and new insulating bricks, Catenary Arch cross draft.I built the propane burners for the kiln with the access to the local HS metal shop. Built in 1971.
  10. Pietro and John Colbeck from UK offer course in the Spring. One was just a throwing course. no firing. Here is a long course...first for 2018. Website program should be online by end of August. http://www.lameridiana.fi.it/ceramic_courses_programme.htm Covers throwing , glazing , firing
  11. Concrete slab getting poured on Monday. Walls will follow shortly. This will be my new kiln shed for year-round firing ability ...as long as I can shovel my way out there!


    1. Show previous comments  8 more
    2. Benzine


      That's awesome Marcia!

      In regards to the snowy walkway, just have a dedicate snowblower ready at the beginning of the path, and you can just easily clear the way, as you walk to the shed.

      No need to pull a muscle, or tire yourself out, before you even start working.

    3. Marcia Selsor

      Marcia Selsor

      finally got an electric I can carry thru the house from back to front. ..after losing 20 pounds from shoveling. We had 200% normal snowfall last winter beginning with 22" in Sept.


    4. Benzine


      I do not envy those, in the Northern US, and obviously places North of that.

      We get a decent amount of snow here, but nothing like that.  I got my current snow blower at the end of a record setting Winter, in terms of snowfall.  

      So I did my driveway, by hand all season, then got the snow blower.  We haven't had a season like that since...

  12. Marcia Selsor

    Temperature Algorithm?

    I just use this https://www.rapidtables.com/convert/temperature/fahrenheit-to-celsius.html I do a lot of teaching in Europe and have to explain in both Celsius and Fahrenheit. There are a lot of convert apps on the web. I don't really think there are folks back in the lab monitoring the threads on this forum. Marcia
  13. try putting some heat lamps on the mold. it could heat up the oil. It has worked for me. Marcia
  14. Marcia Selsor

    Websites And Sales

    I have been using Go Daddy for 7 or more years. I have 22 pages on my site. I can update and edit easily. I appreciate their web support too. I tried one Chris Campbell recommended but it wasn't for me. I average 3-5000 hits per month. I use it mostly for educational purposes.
  15. Marcia Selsor

    Gas kiln stalled . Why?

    I agree with theneed for air on the burners. Question: what altitude are you? If you are at a high altitude, is your chimney giving you sufficient draft. when the kiln is empty, light a piece of news paper , put it near the flue and see if the flame is drawn into the flue. When reducing you should have a hard flame( bluish) coming out the top peep and a licking flame on the bottom. Marcia

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