[Hairline crack help]

5 minutes ago, neilestrick said:

@weberceramicsCould you post some more pictures? I'm not entirely sure what I'm looking at here in terms of what part of the platter this is- top or bottom, is the ring in the middle unglazed, what's the space between the rings, etc?

It goes from the top to the bottom, the ring is unglazed. this is a slab platter where I attached a slab ring to the back 

 

[Hairline crack help]

Hello! 
I am in need of some advice. I will attach photos. A whole batch of my platters came out with a hairline crack directly going through the center. There is no cracks in the green ware/bisque ware stage but they sometime come out like this. Is this from the clear glaze? Is it cooling too fast?

[Please give me suggestions for low fire clay!]

Hello!

I was recently gifted a china painting kiln. However, I want to use it to fire pottery. I am used to doing mid/high fire pottery so I am not sure what clay would work best with this temperature. I can fire  to cone 022-06. The temperature of these kilns are not supposed to exceed 1800 degrees. When working with low fire clay I was taught to always bisque fire to a cone 04. When searching for the appropriate low fire clay, the results are always clay that should be bisqued at 04.  I am guessing I should be doing my bisque fire at a cone 06 so those clays wouldn't work with my kiln? 

Could I then glaze fire also at cone 06 with low fire glaze?

Do you have any suggestions on clay I can buy that would work well with these temperatures? 

My kiln  is the Evenheat RM2 1210 120v

Thank you for your help  

[Help, my mom bought the wrong kiln :(]

Hello!

I am an art teacher with a large background in ceramics. However I need a solution to this problem.  My dear sweet mother purchased an Evenheat RM2 1210 Kiln 120v for me as a gift. As you may know, this kiln is a china painting kiln and should not be fired over 1800 degrees. I know nothing about this firing range or china painting. Unfortunately, when my mom bought me this kiln she did little to no research and just swiped her card. I cannot go back in time. This was a crazy expensive purchase and I do not want to be ungrateful so I want to try to make use of this. I called Evenheat and you cannot return the machine after 30 days (which it has been). I can fire between cones 022-06. I am looking for any and all advice.

-Can I buy an easy solution in order to fire low fire pottery (04-06)? Or even change it to high fire if possible (4-6)? A high fire kiln is what I always wanted

or

-Can anyone recommend clay/glazes meant specifically for cones (022-06)

I have always fired bisque at 04 and then my glazes at 05... What clay would be okay firing at 06-022? Could I just use my normal low fire glaze at 06? 

Thank you in advance