Jump to content

Marcia Selsor

Members
  • Content Count

    7,584
  • Joined

  • Last visited

Posts posted by Marcia Selsor


  1. I am also a new potter looking to buy (aquire) a first kiln. My main problem is that my house is all electric and with the current high monthly pwr bills, I don't know if the additional expense of an electric would be too much. I am still sitting on the fence over electric or propane gas.

     

    p.s. Didn't want to start a new thread on such a new post

     

     

    You may want to get advice from an electrician. You might be able to get a separate power box installed if the service to your house could handle the load.

    Check the amperage in some types of kilns you are considering so you know the type of amps needed when you talk to an electrician. Kilns take a lot of power especially when running on high for several hours. If you can download any kiln company data to show the electrician, that would be helpful.

     

    Marcia


  2. Louise,

    Sorry I missed the ^6 reference. I got mixed up with Eric's link to Eduoard's blog which is for ^9 Reduction glazes, I believe.

     

    Here is a nice satin matt base glaze for ^6. The added colorants are for ^6 Reduction.

    For a stronger blue , increase the cobalt. There will be lavender tinges because of the Magnesium in the Dolomite.

    You could try using a blue mason stain and see what happens.

     

    Selsor’s ^6 R Semi Matt

     

    EPK 20.3

     

    Dolomite 17.7

     

    Neph. Syen. 33.6

     

    Silica 15.9

     

    Whiting 3.5

     

    Ger, Borate 8.8

     

    99.8

     

    Takes colors well

     

    Blue/lavender

     

    1% cobalt Carb

     

    Lt green 1.5% Nickel Carb

     

    1.5% Rutile

     

    Lt. Blue gray

     

    0 .5% cobalt carb.

     

    2.5% rutile

     

    gray 2.5 rutile

     

    2.5 nickel carb.


  3. Andy,

    That deal is hard to beat. Where do you live that you have such convenient service to the manufacturers? I have lived hundreds to thousands of miles away from manufacturers. For 31 years in Montana and now is deep South Tip of texas, I need to consider shipping.

    Marcia

     

     

    Marcia, I live in New Jersey and about 50 miles away from Ceramic Supply. If I purchase $250 or more in supplies they'll deliver them free. The only thing I have to deal with is they do deliveries to my area every other Tuesday.

     

    I am a native Philadelphia. This long distance stuff has been a pain for decades. When a really retire I hope to go back to PA. or closer to suppliers at least.

    You are lucky.

     

     


  4. I have seen potters make their own stilts in Spain. They used only clay, three legs radiating out with clay pointy shapes on the top and bottom at the ends.

    I have also seen them use cylinders with triangular holes in the walls repeated up the side. They insert handmade clay pegs with points aiming upward. These are plate setters. Three cylinders per set. I believe I saw this in Mula, Spain in the SE part of the country.


  5. Chris,

    I have noticed some advice on the forum is sometimes...less than accurate. I have been going through some older posts and find some really questionable answers. I know the topics are monitored...but are they chacking for accuracy? The mentoring process may run into similar problems with accuracy. What are the safe guards for mentees to assure they get a bonafide mentor?

    Who is going to screen the mentors to assure quality advice?

    Marcia


  6. There are many kilns on the market. I would see what is manufactured in your area. Shipping can be a big concern. You might consider the less than a truckload freight discounts from Potters Council. I had Crucible kilns in Montana, manufactured in Seattle. Never had any problems with them at the University nor my school.

    I have Axner super kilns right now. I had wonderful customer support when I bought a used Paragon and needed help. L&L has a good reputation as does Skutt. I was informed by a Skutt dealer in Houston, that Skutt will void warrantied if paper clay is fired in the kiln. Don't know if that is true, but that was the dealer speaking.


  7. low fire clay is safe to use as tableware if it is glazed, other wise it is porous and could harbor bacteria. Low fire clays are less durable than high fire clays.

     

     

    If the earthenware is fired to vitrification it is fine. But you have to test it to see.

    If using it for majolica or sculpture, firing it to ^02 before glazing may help.

    Here is a good reference from Linda Arbuckle.

    http://lindaarbuckle.com/handouts/clay_earthenware.pdf


  8. I have seen this in Spain and in Italy. In Montelupo, Italy they use this type of clay. We use this clay in my architectural ceramics classes.

    To prevent disintegration, you must SOAK the clay in water within 24 hours of firing. It seems to be some kind of reaction to calcinating

    some of the ingredients. This happened in Spain when I was teaching a workshop. I didn't know about soaking it at the time.

    Soaking it does prevent the disintegration.


  9. When moving to bigger electric kilns..be careful about the cooling. Make sure the peep holes are plugged up as it cools. Placing a kiln shelf above the load near the lid will slow down the cooling. If you have it, put some ceramic blanket on the lid. If you have computerized controls, you can program the cooling.


  10. Is the pink clay pink due to adding mason stains? If so, refer to the reference guide to see if the pink stain should not be used with zinc or of it prefers calcium..whatever. Follow the directions.

    You can find clear glaze recipes all over the place. google it...but find what you need. You haven't provided enough information for us to help.


  11. First, is the reason he wants the stilts is because he plans to glaze everywhere?

    Plate setters are good.

    You can use uniform coils if he wants the plates off the shelf for better heat circulation. Arrange coils like sun rays, radiating out.

    You can correct that the stilt would deform the plates as the plates shrink during the firing. The only way to prevent that would be to high fire bisque them and then glaze them adding gum solution to the glaze to help it stick.

    For what is is worth, I'd go with plate setters or coils.


  12. I used a 50 cherry wood ash and 50 Albany slip as a ^10 glaze back in 1971 in Upstate NY. It was a sparkling golden glaze.

    I had an infinite supply of cherry wood ash. Try mixing your local clay with ash. If too runny add a little stoneware clay or kaolin.

    Try some line blends with ash, local clay and maybe koalin if you need to keep the glaze from running.


  13. You can get partial rolls of ceramic fiber on Ebay for some good prices.

    My first solo kiln was built in 1971 from bricks scrounged out of an old

    deserted boiler in the woods in upstate NY. I have built quite a few over the years.

    The ceramics program at MSUB ran on my gas kilns for 25 years. Rebuilt them when

    we move into a new building and after returning from sabbaticals. Sprung arches are

    my favorite to build but catenary arches are prettier, almost religious-looking.

    I had hands on learning when I was in undergrad school. But a friend gave me a copy of Soldner's book (pamphlet)

    which I followed as well as practical experience.

    Marcia

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.