Paul Lewing on mon 15 nov 04
on 11/15/04 11:22 AM, Lori at loribernstein@HOTMAIL.COM wrote:
> I've been messing around with sgraffito using a black slip that I've made
> by mixing up my Laguna B-Mix ^5 slurry with a Mason Stain. I'd like to
> know what colorants I might add to my slurry in order to come up with a
> cranberry colored slip that will hold its color at cone 6.
Hi, Lori. Why have you not tried just adding the appropriate color of Mason
stain to get that color?
Paul Lewing, Seatttle
Lori on mon 15 nov 04
Hi there,
I've been messing around with sgraffito using a black slip that I've made
by mixing up my Laguna B-Mix ^5 slurry with a Mason Stain. I'd like to
know what colorants I might add to my slurry in order to come up with a
cranberry colored slip that will hold its color at cone 6. Any suggestions
are appreciated.
Thanks!
Lori Bernstein
Froggy Bottoms Pottery
Port Townsend, WA
Anne Wellings on tue 16 nov 04
Lori,
I would guess that another Mason stain would be your best bet. The Mason
color chart has lots of reds and tells which will go to ^6 (probably most
of them). If you don't have this, it is available at pottery suppliers for
a few dollars.
You could also try the encapsulated cadmium stains by Cerdec (Degussa) or
Mason, if you are not worried about the toxicity issue. They are supposed
to give the best reds, though I haven't tried them. There are discussions
about them in the archives.
If you are putting a clear glaze over the slip, it is more likely that the
color will show up well. If you are not using a glaze over it, it will be
harder to get a good color unless you use a slip recipe which has a lower
melting point and starts to develop a sheen at ^6. You might try the ^6
version of Bringle Wet-Dry-Bisque Slip, which can be found in the archives.
(This would technically be called an engobe by many people because of its
higher amount of silica and flux and lower clay content than many slips.)
I'm sorry, I don't know what percentage of stain to suggest for a slip. I
guess I'd start by trying the percentage that you use for the black you
mentioned. I start with 10% when testing Mason stains in glazes.
If you are reduction firing you could try something with copper, and if you
are electric firing, you could try something with tin and chrome. But I
think these would be tricky, unless someone else knows otherwise. The
stains would be more straightforward.
Anne Wellings
Sunrise Beach Pottery
Olympia, Washington
On Mon, 15 Nov 2004 14:22:12 -0500, Lori wrote:
>Hi there,
>I've been messing around with sgraffito using a black slip that I've made
>by mixing up my Laguna B-Mix ^5 slurry with a Mason Stain. I'd like to
>know what colorants I might add to my slurry in order to come up with a
>cranberry colored slip that will hold its color at cone 6. Any suggestions
>are appreciated.
>
>Thanks!
>
>Lori Bernstein
>Froggy Bottoms Pottery
>Port Townsend, WA
>
>___________________________________________________________________________
___
Catherine Yassin on tue 16 nov 04
In a message dated 11/15/2004 3:07:33 PM Central Standard Time,
loribernstein@HOTMAIL.COM writes:
I'd like to
know what colorants I might add to my slurry in order to come up with a
cranberry colored slip that will hold its color at cone 6. Any suggestions
are appreciated.
Lori, I have used "Crimson" to cone 6, even 7 with good results in a glaze.
Its kinda "cranberry" to me.
-Cat Yassin
San Antonio
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