search  current discussion  categories  techniques - misc 

use of calcined slips on bisque

updated wed 31 dec 03

 

e wilson farrington on mon 29 dec 03


Howdy Clayarters!=20

I have searched for additional information regarding the use of =
slips to be used on bisque, but can't find a heck of a lot of info in =
the archives, or elsewhere for that matter.=20
My question is whether or not I can use a calcined slip =
"unadulterated," or must I also incorporate a frit of some kind?=20
I am planning the first stage of testing and before I end up with a =
bunch of flaking slip I'd like to cover all my bases. Any help would be =
appreciated!

Thanks!

---Willie--- Day #7 of the flu and still counting.... ho, ho, hum.....

piedpotterhamelin@COMCAST.NET on mon 29 dec 03


Your slip should have some frit to help fuse it to the bisque. But you didn't say your firing range.
Your slip could contain some binder such as Veegum Cer or T to glue it onto the pot.
Happy Holidays
Rick

--
"Many a wiser men than I hath
gone to pot." 1649
> Howdy Clayarters!
>
> I have searched for additional information regarding the use of slips to be
> used on bisque, but can't find a heck of a lot of info in the archives, or
> elsewhere for that matter.
> My question is whether or not I can use a calcined slip "unadulterated," or
> must I also incorporate a frit of some kind?
> I am planning the first stage of testing and before I end up with a bunch of
> flaking slip I'd like to cover all my bases. Any help would be appreciated!
>
> Thanks!
>
> ---Willie--- Day #7 of the flu and still counting.... ho, ho, hum.....
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.

John Britt on mon 29 dec 03


Rick,

I use Bauer ship on bisque with the only adjustment being to apply it thin.

I have also use Avery/Helmar slip which is 70 clay and 30 NS with no
problems either. The thickness should be like skim milk though,

Best of luck,

John Britt

Snail Scott on tue 30 dec 03


At 05:48 PM 12/29/03 +0000, you wrote:
>>I have searched for additional information regarding the use of slips to be
>> used on bisque...can use a calcined slip "unadulterated," or
>> must I also incorporate a frit of some kind?


A slip for bisque is pretty much synonymous with
an engobe. (Try that for an archive search.) Whether
you need to add frit depends on the clay it's made
out of. If it's a lower-temperature clay, and you're
firing high enough to make it fuse, you may not
need anything else. But if it's your base clay that
you've calcined, I'd plan to add frit. Start with
10% of almost any frit, and maybe test 15% and 20%,
too.

-Snail