Jump to content

Recommended Posts

It is more common to match you glaze to your claybody than the other way around so eventually when you settle on a body  you may  need to get some matching glazes. FYI - We rarely use any body that is not less than 1% absorption at our working cone temp. I am guessing many of the folks here are 1% or less as well. Just a note,  porcelain  bodies sometimes are harder to fit in that they are generally lower COE so glazes that once were great on stoneware can tend towards crazing on porcelain bodies.

 

Link to post
Share on other sites
1 hour ago, Bill Kielb said:

It is more common to match you glaze to your claybody than the other way around so eventually when you settle on a body  you may  need to get some matching glazes. FYI - We rarely use any body that is not less than 1% absorption at our working cone temp. I am guessing many of the folks here are 1% or less as well. Just a note,  porcelain  bodies sometimes are harder to fit in that they are generally lower COE so glazes that once were great on stoneware can tend towards crazing on porcelain bodies.

 

Do you have any recommendations? I only really have Standard Clay near me.  Also, most the mid-fire clays seem to be somewhere within the 1.25% to 2% shrinkage rate.

 

Edited by Brandon Franks
Link to post
Share on other sites
1 hour ago, Brandon Franks said:

Do you have any recommendations? I only really have Standard Clay near me.  Also, most the mid-fire clays seem to be somewhere within the 1.25% to 2% shrinkage rate.

 

I do not. I throw porcelain  and prefer several but find it is a personal preference thing. Just wanted to get you thinking about absorption as well as trends in glaze fit.(not necessarily related) Typical, not always but typically functional potters target 0.5% and will accept 1%. When I learned - 3% leaks on your grandmothers antique piano, 2% probably, 1% maybe. Manufactures would love to sell 3% as being good enough That would be absorption rate, not shrinkage though.

Edited by Bill Kielb
Link to post
Share on other sites
16 minutes ago, Bill Kielb said:

I do not. I throw porcelain  and prefer several but find it is a personal preference thing. Just wanted to get you thinking about absorption as well as trends in glaze fit.(not necessarily related) Typical, not always but typically functional potters target 0.5% and will accept 1%. When I learned - 3% leaks on your grandmothers antique piano, 2% probably, 1% maybe. Manufactures would love to sell 3% as being good enough That would be absorption rate, not shrinkage though.

All right, will definitely take into consideration.

 

Im probably going to try out three different clays now, just because I am in the market for new clay and do not want to purchase 2,000lbs of clay that doesn't work well with some of my other glazes.

 

Thanks for your help though, I have not had to take absorption into account for years (and honestly forgot to check it)

 

Have a good day!

 

Link to post
Share on other sites
1 hour ago, Marcia Selsor said:

Get a copy of Mastering ^6 Glazes or Michael bailey's Cone 6 glazes and mix your own.  You can adjust a glaze fitting to your clay with an small addition of Silica like 0.5% or an adjustment of kaolin up to 2% but you have to test. 

Marcia

I do actually mix my own glazes. I was just interested in these particular glazes because they break unlike any of my glazes.

Link to post
Share on other sites

IDK, some basic glaze chemistry and a little bit of dialing in melts is pretty easy actually. Definitely worth learning so you can get the look you want. This tile below is from a batch of five progressions to replace rutile. Breaks nice, movement is dialed in as I wanted, no crazing and durable flux ratio. All created in about thirty minutes. Making your own definitely has advantages. Picture not so great though!

Edited by Bill Kielb
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

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