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Pottery, Clay and Ceramics: What is the difference?

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Luvmypond
Troy, OH

April 28, 2012
9:28 PM

Post #9102025

Between firing bisque at 04 and 06? I've always fired at 04. I ran out of those cones, so today I used 06. I know quite a few people who use 06 for bisque. Does it make a difference?
imapigeon
Gilroy (Sunset Z14), CA
(Zone 9a)

April 28, 2012
11:23 PM

Post #9102070

The clay is somewhat softer at ^06 than at ^04. It will typically absorb a little more glaze, be a bit more fragile and scratch easier. Most low-fire loads are bisqued at ^04 and then glazed at ^06. For mid-range (^5/^6) or high fire (^9/^10) it probably doesn't make much difference.

However, for low fire pieces you always want your bisque to be at least one cone hotter than your glaze. So if you're glazing to ^06 you should probably refire that load to at least ^05 before you glaze-fire it.
Luvmypond
Troy, OH

April 29, 2012
6:57 AM

Post #9102306

I am firing glaze to ^6. I always thought it was the norm to bisque at 04. Than when I started seeing people say they fire to 06, I was wondering what the difference was. So now that I have fired to 06, do I put the glaze on thicker? Will it affect the color?
imapigeon
Gilroy (Sunset Z14), CA
(Zone 9a)

April 29, 2012
2:34 PM

Post #9102823

Nope and nope! Just be a teeny bit more careful handling your pieces when you're dealing with handles or glazing the insides, because I have found that attachments are just slightly less secure, and large pieces with glaze on the inside are a little more fragile when they get wet. It's really hardly noticeable. If you're mid- or high-firing, anything between 06 and 02 is fine. I've done them all at various times.
Luvmypond
Troy, OH

April 29, 2012
8:35 PM

Post #9103278

Thanks. Most of what I'm doing is flat tiles. The other thing is a tunnel to put in my aquarium. Great to know I can use lower temp cones to bisque.

Another question, I'm doing an orange car and trying to figure out what would be a good background color. Don't really want to do black, the whole Halloween colors. The orange is a bright orange. Any suggestions would be greatly appreciated !!
imapigeon
Gilroy (Sunset Z14), CA
(Zone 9a)

April 29, 2012
9:31 PM

Post #9103352

I'd suggest dark blue or purple. They're close to opposite orange on the color wheel and will probably look great together!

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