Jump to content
Sign in to follow this  
Brittany

Dyeing Clay

Recommended Posts

Brittany    0

Is there any other way to dye clay without using colorants? Like natural things or household things that won't alter the way the clay fires?

Share this post


Link to post
Share on other sites
Marcia Selsor    1,301

coloring clay is done with oxides like iron or ochre. Rust is iron, but it is better to use processed materials or you could get a puncture from a sharp piece.

Maybe you are lucky to have an iron bearing clay nearby that your could use to deepen the color. It really depends on what you're trying to do.

Brighter colors are commercially made with rarer metals.

 

If you are pit firing, yellow ochre can give you a red earthen color if you oxidize the firing.

So, you really need to be more specific with what you are trying to do.

 

Marcia

Share this post


Link to post
Share on other sites
Brittany    0

I was looking for ways to make a blue colored clay, but since the processed way is safer what would be a good recipe for a deep blue clay with colorants?

 

 

Share this post


Link to post
Share on other sites
neilestrick    1,381

Natural dyes like you would use on fabric will just burn out during firing. Metallic oxides are necessary to create color in ceramics. You are welcome to scrape as much rust off my car as you want.

 

Blue can be created in glazes with iron, copper or cobalt, depending on the glaze formula and firing method. For coloring clay however, cobalt is necessary to make blue. I prefer adding it into a slip and then letting the slip dry out to a workable consistency.

Share this post


Link to post
Share on other sites
Brittany    0

And why do you want to dye it? Are you needing a solid blue clay?

Could you use an Amaco Underglaze?

 

Marcia

 

I want to make a solid blue clay for multiple projects, then also make a marbled appearance by wedging the blue clay with with the normal white clay.

Share this post


Link to post
Share on other sites
OffCenter    82

And why do you want to dye it? Are you needing a solid blue clay?

Could you use an Amaco Underglaze?

 

Marcia

 

I want to make a solid blue clay for multiple projects, then also make a marbled appearance by wedging the blue clay with with the normal white clay.

 

 

You need to order a half pound (more or less depending on how much clay you plan to color and how dark you want the blue) of cobalt carbonate at close to $30 a pound. Cobalt carb is weaker than cobalt oxide but it is less likely to speckle and more likely to give you a smooth, even blue and much better light blues. It's strong so you will not need much. A half pound would probably color 25 lbs of clay a medium light blue. If I'm wrong here, Chris will probably correct me.

 

Jim

Share this post


Link to post
Share on other sites
spwhalen123    0

Say you added stains like cocoa powder/cinnamon or even boiled down hedge apple wood for a yellow to slip. I'm assuming it would have the same effect and burn out during the firing? 

Share this post


Link to post
Share on other sites

Say you added stains like cocoa powder/cinnamon or even boiled down hedge apple wood for a yellow to slip. I'm assuming it would have the same effect and burn out during the firing?

 

Yes. Anything that comes from an organic source like this will combust in the kiln. You need pigments that came out of the ground at some point.

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  

×