Steven Hill Oxidation Project


Steven Hill Oxidation Project

Achieving atmospheric glaze effects in electric kilns at mid-fire temperatures, through the layering of sprayed glazes. The starting point recipes are given in two discussions "Strontium Crystal Magic . . ." and "The Companion Glazes"

Members: 157
Latest Activity: Jul 12, 2018

Discussion Forum

The Companion Glazes - Modifiers and Complements to SCM

Started by George Lewter. Last reply by Norm Stuart Sep 29, 2017. 46 Replies

These are the glazes that Steven introduced us to for creating the layered effects for which he is renown. This is the place to post modifications for these glazes, and other glazes that you have found to work well with SCM and SCM for orange. …Continue

Pinholes and craters

Started by Tom Waggle. Last reply by Tom Anderson Oct 17, 2016. 22 Replies

I sent an email out to all group members. I should have just started this thread.I am using Laguna 607 cone 6 stoneware.I am getting pinholes and craters on about 1/3 to 1/2 of my pieces.I contacted Stephen Hill via email to ask him about this. He suggested that I just switch to porcelain as it is the gasses from the impure elements in stoneware body.I have adjusted my bisque schedule to slow down to 100'/hr between 1100' and 1700' ( the temp range where those organic gasses burn off). I am…Continue

SCM at cone 6. Glaze Issues, Firing Temp, and Chemistry Questions

Started by Joseph Fireborn. Last reply by Norm Stuart Jul 24, 2016. 5 Replies

This has been created to carry over the conversation that we were having on the discussion comments instead of in a topic. I have copied and pasted the discussion that I created in order of start to current. Please lets move all topics here as it would better be searchable in the future. Comment by Joseph Fireborn I have a question about SH's pots. I have tried using SCM, I get some really nice results, but the glaze surface…Continue

Strontium Carbonate and Strontium Crystal Magic

Started by George Lewter Jul 12, 2016. 0 Replies

Numerous members have used SCM and Jen's Juicy Fruit with excellent results. I believe the crystals being objected to are some kind of crystal that is growing in the melt upon cooling, not unmelted strontium poking out of the matrix. The crystals have sharp diamond reflective points which would not be present if they had been even slightly attacked by the glaze fluxes, of which there are plenty, evidenced by the fact that the glaze is very prone to running.My understanding is that …Continue

Comment Wall


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Comment by Norm Stuart on March 9, 2014 at 7:44pm

I too have found the SCM warm and cool very similar.  Cool on the left and Warm on the right.

SCM-Warm is slightly more fluid than SCM-Cool, due to the higher level of Custer Feldspar, and of course yellow-orange colored from the Yellow Iron Oxide not in the cool version of Strontium Crystal Magic.

Comment by Norm Stuart on March 9, 2014 at 7:24pm

I know of four different versions of Hannah's Fake Ash, none of which include silica - so you have a fifth recipe!

I obtained this version of Hannah's Fake Ash from the potter Yoko Sekino-Bové.

100.0% Ellen Shankin’s Fake Ash ^5 -10
60.0% Redart Clay
30.0% Whiting
10.0% Barium Carbonate

Comment by Linda Stauffer on March 9, 2014 at 3:09pm
Hannah's fake ash. Does it have silica? Two different recipes. One on DVD other in cone 5-6 glaze book.
Comment by Brandon "Fuzzy" Schwartz on March 18, 2013 at 11:09pm

Hey guys, thanks for the comments. I thought the warm and cool versions were pretty similar, I just hoped to see if there was a discernible difference if they were both put under the same glaze. I suppose it could be different for every glaze combination.

George, I was expecting an answer like you provided. Probably too many variables for anything conclusive. It would be interesting to see how stable the glazes over SCM are compared to the glazes by themselves.  I've looked at Steven Hill's site and he has a lot of great functional work but I haven't seen any mention of leach testing. Maybe I'll try to contact him and see what he has to say.

Thanks again.

Comment by John Lowes on March 18, 2013 at 3:39pm

Brandon,  The Steven Hill portion of the download offers good examples of the SCM Warm versus Cool SCM on pages 5 (warm)and 6 (cool).  He uses a warm palette SCM Warm base, and a cool palette, Cool SCM base).  About 80% of a pot gets the SCM base, then 4-5 glazes are layered over.  The top and bottom, or edges will typically get a contrasting glaze.  Several good examples in that article.

Comment by George Lewter on March 18, 2013 at 3:32pm

The two are the same base, but cool is white, warm has iron added that gives it some yellow. Neither is particularly attractive alone, and are always used as base glazes, under several or many layers of other glazes with multiple heavy metal colorants.

How would you reliably leach test all the possible glaze interactions and the stability of those blends? It might give some comfort to have samples of your favorite combinations leach tested, but you still couldn't guarantee future results.    

Comment by Brian Dean on March 18, 2013 at 11:52am

Brandon, basically the Warm SCM is a more earthy yellow/brownish color after firing. You use it with warm earthtone color schemes, ie. with yellows, browns, greens, iron saturate reds, etc.  The Cool SCM is more white in color and goes better with a cooler, ice-like pallet of blue, white, grey, black type of glaze colors. If you get Steven Hill's DVD he shows examples using SCM Warm & Cool versions. I mostly work with the SCM Warm but have done a few pots with the SCM Cool.

Comment by Brandon "Fuzzy" Schwartz on March 17, 2013 at 1:36pm

Hello SHO Project,

Can anyone tell me (or show images) of the difference between the cool and warm versions of Strontium Crystal Magic? I downloaded a free file from Ceramic Arts Daily (free subscription required) and it listed both recipes. Link. Just curious if anyone already has some side by side comparisons. Eventually I hope to post some of my own.

Also, have there been any tests of the "food safeness" of SCM? I've seen it used on the insides of bowls but other people use a liner glaze and only have the SCM on the outside of pots. I haven't seen anyone share actual test results.

Sorry if this has already been discussed. I'm still learning to navigate the site. There is a lot of good info!

Comment by George Lewter on April 6, 2012 at 7:35pm

This  was Posted by eleanor akowitz on December 3, 2010 at 1:59pm in Continuing Education. It got no responses there, so I'm moving it here where more people may see it, and follow the link to see the photos from the Steven Hill workshop she attended.

i have just uploaded the photos that i took at steven hill's workshop in pittsburgh at standard ceramics. here is the site
the total experience was great. i am sure all of us learned many new ideas
and techniques which we all have to work on now that we are back at our
own studios.  i wish i had brought more than 3 pots, but it was hard as i
was flying in to the workshop.  so now i havelots to mull over and also
dream about.  
enjoy the photos
Comment by George Lewter on March 18, 2012 at 4:54pm

I highly recommend the the Steven Hill DVD to anyone who wants to learn about layering glazes, use his updated cone 6 glazes and/or firing schedules, get a feel for the man himself before doing his workshops, or as a refresher if it's been a while since you attended one of his workshops.


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