Jump to content
Sign in to follow this  
mregecko

Materials For ^6 Copper Red Oxidation

Recommended Posts

Hi Folks -- I'm looking to play around with some ^6 Copper Reds in Oxidation using chemical reduction. I've read the classic Pearsons article, as well as Tom Turner's great research on doing the same at ^9.

 

The problem I'm having is finding some of the listed ingredients.

 

I've reached out to General Color & Chemical, but my standard suppliers don't have any of the General Color Frits or even their Ferro equivalents (GF-146 / Ferro 210R for example). I'm also having a hard time finding anything other than chunky 400-mesh Silicon Carbide.

 

Any recommendations for suppliers here?

 

Thanks in advance!

-- M

Share this post


Link to post
Share on other sites

For the silicon carbide, consider purchasing from a lapidary abrasives supplier (for polishing gemstones).

 

Good call! I'm already finding some in the 800-1000 mesh range, that should be about the range I need. Thanks for the suggestion!

 

Now, onto finding the frits... ;-)

Share this post


Link to post
Share on other sites

I second trying a non-ceramics supplier for their silicon carbide.  Lapidary supply, glasswork suppliers, maybe sandblasting, etc should all carry it.  I want to say our print lab gets their SiC for grinding/polishing lithography stones from a print/litho supplier.  

 

The only issue I see with buying from a non-ceramics source is they might categorize the SiC based on GRIT size vs MESH size. I'm not sure on the conversion, there should be info online about this.  I know our print lab has as fine as 800 grit I think, which is pretty fine.

Share this post


Link to post
Share on other sites

I think you are on a wild goose chase for those frits. General Color doesn't make ceramic frits anymore, been out of that business for a long time. I don't see the 210R in the Ferro catalog at all. Even it it is still made, it is probably a specialty or industrial item that is only available by the carload. You are probably better off getting some glaze calculation software and reformulating the Pearson glazes using currently available products. You also might try any conventional copper red recipe intended for reduction and just add the silicon carbide for localized chemical reduction.

Share this post


Link to post
Share on other sites

John Britt lists a handful of copper red oxidation recipes in his The Complete Guide to Mid-Range Glazes.  page 103.  Frits are of the common variety . . . 3110, 3124, 3134; silicon carbide mesh is 600.

 

Looks like I have even more reason to grab that book now!

Share this post


Link to post
Share on other sites

 

John Britt lists a handful of copper red oxidation recipes in his The Complete Guide to Mid-Range Glazes.  page 103.  Frits are of the common variety . . . 3110, 3124, 3134; silicon carbide mesh is 600.

 

Looks like I have even more reason to grab that book now!

 

you will love the book.  So worth the money! 

 

r

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  

×

Important Information

By using this site, you agree to our Terms of Use.