Jump to content
Sign in to follow this  
clayshapes

Stacking Cone 6 Greenware In Bisque Firing

Recommended Posts

clayshapes    9

I know you should be able to stack greenware for a bisque firing without incident -- but I'm always afraid to - mostly because I'm afraid that my cone 6 porcelain plates and platters will not stay flat. Generally speaking the shape doesn't change in my bisque firings (05 or 04) - but because I prefer to use fairly thin slabs to create my work, there is sometimes warping during the glaze firing.

Technically and intellecturally I know it is unlikely that cone 6 porcelain (Tuckers Bright White) will move in shape during a cone 04 or 05 firing...but still I hesitate. I would love to stack - to get a bigger load of bisque done at once. Would love to hear others experience with stacking (and when I say stacking, I just mean stacking two plates or platters - not a half dozen!)

Share this post


Link to post
Share on other sites
Denice    243

I know how you feel, I just fired a large bisque firing that had 40 large thin leaves of various sizes for a mural in it.  I stacked the leaves with the largest on the bottom then each leaf on top was smaller, I stacked them 4 deep.  I don't use the Cone 6 porcelain, I use a general purpose throwing\handbuilding C6 clay. Maybe someone who does can answer your question.    Denice

Share this post


Link to post
Share on other sites
Chantay    101

I am on my kindle and can't do this for you. If you do a search for /bisque firing/ you will find an extensive thread on this. Even has pics.

Share this post


Link to post
Share on other sites
Roberta12    135

after seeing a picture on this forum of "tumble" stacking  I have been less worried about really loading up a bisque load.   I use b mix, porcelain, and a brown stoneware.  I was always worried about warping or handles falling off mugs...so far that has not happened.  maybe try stacking with a few pieces just to see how it goes?

Share this post


Link to post
Share on other sites
neilestrick    1,381

The key to stacking pieces in bisque it to make sure forces aren't applied in directions that could cause cracking. When stacking bowls and plates, make sure the foot is resting in the bottom of the piece below it, so there is no outward pressure against the lip. You can also stack foot to foot, or lip to lip.

Share this post


Link to post
Share on other sites
timbo_heff    37

Be careful with the brown stoneware: those can bloat in the glaze fire if they don't get enough oxygen in the bisque fire> I would not tumble those but give them plenty of room

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×