Jump to content

Crackle Slips For Greenware Or Bisque Cone 6,7,8


Recommended Posts

Not wrong ... but the effect can be produced in more ways than just glazes.

 

Some people are now using slips to get crackle effects in raku firings.

The slip falls off and you are left with black crackles on the white clay body.

 

You can also use some wax resists to get a crackle type effect ... as it shrinks it leaves channels for color application.

Link to comment
Share on other sites

How are you planning on firing them?

What temp? What type of kiln?

You also have options of crackle glazes and lichen type glazes.

 

 

If you have a copy of 500 pitchers there are two examples of the surfaces I would like to begin with. John Arnold Taylor`s jug has a description that he uses slips stains and oxides as well as glaze. But I think he starts with the crackle slip on greenware or bisque for the initial texture. In the same book there is a piece from Dan Anderson which seems to be fired much lower. I am firing electric in cone 6, 7, 8 range. Sometimes I have possibility to fire with wood at a higher temperature cone 10ish. Application is my question and consistency and recipes for the slip(s).

Link to comment
Share on other sites

I have a similar question; is the surface on the pots like these?

 

http://www.rob-barna...whiteBowls1_pop

 

 

It has some resemblance. Here is the site for John Arnold Taylor which shows the somewhat more subdued surface he is using. http://www.johnarnoldtaylor.com/Gallery.asp?GalleryID=62296&AKey=4J924LSX

But the bowls you have shown are interesting.

Thanks any more info you have collected? I have been reading what can promote crackle surface from Robin Hopper`s books and including reticulated glazes and black slips (underneath the glaze). Also very interesting. John Brit also has crackle slip in his publication on high fire glazes (page 62).

Link to comment
Share on other sites

I have worked with crawling glazes which can be made with additions of magnesium carbonate. The amount directly affects the texture and patterns.

Maybe you should see what happens by adding Magnesium to the slips?

 

 

Marcia

 

 

 

 

Yes thanks for this post Marcia. I plan to try this suggestion.

Link to comment
Share on other sites

Sorry, I don't have that book. If you can post images it would help.

There are just too many ways of doing crackle to be able to guess what was done.

 

 

To show an image from John II can only direct you to his webpage. It is used on his tableware and especially on the cups and jugs.

http://www.johnarnoldtaylor.com/Gallery.asp?GalleryID=62296&AKey=4J924LSX

Link to comment
Share on other sites

I have a similar question; is the surface on the pots like these?

 

http://www.rob-barna...whiteBowls1_pop

 

It has some resemblance. Here is the site for John Arnold Taylor which shows the somewhat more subdued surface he is using. http://www.johnarnoldtaylor.com/Gallery.asp?GalleryID=62296&AKey=4J924LSX

But the bowls you have shown are interesting.

Thanks any more info you have collected? I have been reading what can promote crackle surface from Robin Hopper`s books and including reticulated glazes and black slips (underneath the glaze). Also very interesting. John Brit also has crackle slip in his publication on high fire glazes (page 62).

 

I'm pretty much a beginner. My teacher recommended that I try firing to bisque twice, with slip applied after the first firing. It should cause the slip to shrink over the already partially vitrified clay and therefore crackle. It might also leap off the pot or flake off. I've not tried it yet. In theory, mismatched clay body to a slip which shrinks more than the body should do that as well. Really only one way to find out . . . try something and see.

Link to comment
Share on other sites

I have a similar question; is the surface on the pots like these?

 

http://www.rob-barna...whiteBowls1_pop

 

It has some resemblance. Here is the site for John Arnold Taylor which shows the somewhat more subdued surface he is using. http://www.johnarnol...6&AKey=4J924LSX

But the bowls you have shown are interesting.

Thanks any more info you have collected? I have been reading what can promote crackle surface from Robin Hopper`s books and including reticulated glazes and black slips (underneath the glaze). Also very interesting. John Brit also has crackle slip in his publication on high fire glazes (page 62).

 

I'm pretty much a beginner. My teacher recommended that I try firing to bisque twice, with slip applied after the first firing. It should cause the slip to shrink over the already partially vitrified clay and therefore crackle. It might also leap off the pot or flake off. I've not tried it yet. In theory, mismatched clay body to a slip which shrinks more than the body should do that as well. Really only one way to find out . . . try something and see.

 

 

Thanks Lawpots. I am going to try some of the different possibilities asap it all takes time. Please let me know if you discover anything along your path. Did you produce those bowls pictured?

Link to comment
Share on other sites

  • 8 years later...

there is a well documented technique using sodium silicate to coat a freshly slipped pot, waiting for the ss to dry and then stretching the pot from the interior.  this results in cracks over the entire pot.   did not see the above mentioned photos so i may not be talking about the method used there.

Link to comment
Share on other sites

On 6/13/2019 at 2:43 PM, Kilngod ceramics said:

Hi 

please can someone help me with crackle slip on bisque stoneware fired in electric kiln to temp 1280. I have tried the recipe given in  the book Ash Glazes by  Phi Rogers 

can someone help me . I am stuck .the recipe hasn't worked .

If you've already fired the piece to 1280, it's likely already vitrified, and you'll have a really hard tome getting anything to stick to it. Typically we bisque to cone 06-04 so the piece is still porous for applying the glaze. 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

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