Sunday, May 11, 2014

Bloated...


 
Well we lost a whole load of work. 
The whole thing... (Who says electric is trouble free?) Nothing but shards now.
The cone 5 Laguna Cassius Clay bloated horribly. We have a few ideas why it might have thumbed its nose at us, but we're totally curios if anyone has any solutions.



8 comments:

Kitoi said...

Common occurrence with Cassius fired to ^5. No bloat when fired at ^3-4. I fire to ^5, sometimes it bloats, others it does not. Smooth surfaces it happens more than fissured

FetishGhost said...

Thanks. I'm hearing everyone say this body is problematic. Any clues help.

Linda Starr said...

fire to cone 4 and slowly, I used 12 hour fire for these andcone 3 & 4 with flat:

http://bluestarrgallery.blogspot.com/2012/04/black-is-beautiful.html

once fired tests on tiles:

http://bluestarrgallery.blogspot.com/2011/10/copper-silver-and-gold.html

smartcat said...

Definitely the pits. I hope all you potters who use this body have complained. If it's listed as ^5; it should fire to same with no problems.

Linda Starr said...

should be cones were flat

Kitoi said...

Use it frequently at ^5 with a 15min hold at medium speed. This came out without bloat, even on the smooth areas.
https://flic.kr/p/niBupJ

Schnee said...

Sorry to hear you had this problem. When I had issues with bloating for Laguna Dark Brown clay ( ^10) I did some online research and found that it is recommended that you bisque longer to ensure you burn out all the organic material. The cause of the bloating actually is the incomplete removal of this organic material at the bisque stage that the results in trapped gasses at the glaze firing stage.

You can read more about this here:
http://www.lagunaclay.com/support/bloating-and-blackcoring.php

John Britt said...

Overfired.