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Becca

Member Since 06 Jun 2013
Offline Last Active Dec 16 2013 08:03 AM
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Topics I've Started

Firing Greenware In A Glaze Firing?

12 December 2013 - 09:36 AM

Hi all! I would very much appreciate any advice on my small quandary:
I let a friend make a few bowls as a Christmas present for his wife, and I was planning/hoping to throw them in with the low fire (^06 ) glaze firing I have already planned. Being that he used a ^6 clay body, bisque firing them to ^06 seems permissible, although I usually do bisques at ^08. However, reading up on the question, I discovered that it is not a good idea to mix greenware and glaze ware in the same firing, even if they require the same temperature, do to the possibility of gasses produced by the greenware interfering with the glaze chemical reactions.
My question is this: how bad of an idea is it to do it anyway, being that all of my pots are glazed in a clear glaze with black and white underglazes?? He needs them by Christmas of course, and I do not have any additional greenware to fire at the moment. So ya see, I was hoping to save dollars (and greenhouse emissions) by not having to do an entire bisque firing for four bowls... Advice from all you smart potters out there would be very appreciated!! Thank you!

Underglaze vs. slip vs. mason stains?

06 June 2013 - 09:18 AM

Greetings, all! I am new to this forum, and have read a few threads relating to my question, gleaning lots of useful information, though nothing that has quite helped me solve my quandary. My ceramics experience (in college and using other professionals' studios) has been focused primary on gas fired ^10 stoneware. I am just starting out on my own, building up my own studio, and am learning to work with what I've got, which is an electric kiln. I have been experimenting with ^6 porcelain, and my initial idea was to paint on a black slip, then to carve in drawings and designs, exposing the white clay body, and then to glaze the entirety in clear. I have zero experience using a slips, but understand that you have to apply them to moist clay (nothing drier than leather hard). One potential issue is that I have a five month old baby, and have some trouble getting to my studio super regularly right now, making it difficult to keep pots moist until I am ready to decorate. I am interested in trying mason stains and/or black underglaze, thinking that they may lend some versatility. Could I create the graphic imagery that I desire by simply painting or drawing with black on leather hard, bone dry, OR bisque fired pots??? Could I also have the option of creating the carved, textured surface by using the underglaze or mason stain much the same way I was planning to use the slip? What are the limitations of underglaze and mason stains in terms of WHEN they are applied? Any tips would be much appreciated! Thanks!