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 November 10, 2015 at 1:02am

Joan - The Critter needs 3 cfm (cubic feet per minute) at 90 psi, according the page on

Critter Siphon Gun on

Just below is the section "Customers Who Bought This Item Also Bought" which shows some $100 compressors with higher PSIs, so the pump or the critter needs a pressure valve to reduce the pressure to the Critter. And these pumps have lower cfms, (a lower flow rate) which is why a compressor has a storage tank.

Based on my limited experience with compressors, another important attribute to consider is the noise level they produce. Sadly, less noise tends to be associated with a higher price.

Comment by Joan Scott 4 hours ago
The Critter Siphon Gun..... wondering which compressor would operate well with this gun? Anyone using this system?

Comment by Joan Scott on November 9, 2015 at 8:10pm

The Critter Siphon Gun..... wondering which compressor would operate well with this gun? Anyone using this ystem?

Comment by George Lewter on April 2, 2015 at 6:35pm

We have reports of being temporarily down starting in January. I checked on them a couple of times with the same result. This type of notice without updates usually means permanently down. 

Comment by Norm Stuart on April 1, 2015 at 8:01pm

The GlazeMixer website is temporarily down for maintenance.

It may take us a few days to finish everything.

If you have any questions, please contact us at

Thank you for your patience.

Comment by Charna Schwartz on April 1, 2015 at 4:46pm

I am assumeing that Glazemixer is out of business. Does anyone know?

Comment by Darthe Hues on December 14, 2014 at 11:37pm

I just joined the group and I'm reading the posts so excuse me if this is answered elsewhere. I the new updated Steven Hill DVD available here in this site? I am not seeing it on the home page of his site. The DVD on the ceramic arts daily site looks like it is not an updated version. Does someone have the link to the updated version? Thanks

Comment by Chantay Poulsen on May 22, 2014 at 6:10pm

Diane, I look forward to seeing your results.  I switched to Laguna's Red Rock this year.  I love the look of it raw when slightly over fired.  I am having to look for new glazes too.  I love the look of Steven Hills glazes but spraying isn't an option for at this time. I'm wondering if the same effects could be duplicated by pouring with thin glazes.

Comment by cp dunbar on April 27, 2014 at 11:17am

anyone know what S Hill's most recent firing schedule is ?  I know he changes this, holding at approx 1600 degrees.  Trying to program this schedule in my kiln.  

Thank you ,   cp  by the pond , now with two bee hives !

Comment by Linda Stauffer on March 9, 2014 at 8:05pm
The version on the Steven Hill video has silica in it. I contacted Steven and he said it was a transcription error. No silica! The correct version is in the Cone 5-6 Glaze book.
Comment by Brian Dean on March 9, 2014 at 7:45pm

The Hanna's Fake Ash I've seen around for years and which I use frequently for Cone 6 oxidation glazing is:

Hanna's Fake Ash:

30 - Whiting

10 - Strontium Carbonate

60 - Redart Clay

Add: 3.5% Red Iron Oxide

        3% Yellow Iron Oxide

For Yellow: add 4% Ochre

For Blue Add 1.5% Cobalt Carbonate or around .75% Cobalt Oxide

No Silica in the Hanna's Fake Ash recipe that's been around a long time.


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Purchase Glazes Cone 6 by Michael Bailey, The Potters Book of Glaze Recipes by Emmanuel Cooper, or Making Marks by Robin Hopper, all available at amazon.comMastering Cone 6 Glazes by John Hesselberth & Ron Roy is now out of print.

Harbor Freight is a great place to find unbeatable prices for better HVLP spray guns with stainless steel parts and serviceable economy models, as well as detail guns, all tested by our members for spraying glazes, as well as compressors to power the guns. As yet no one has tested and commented on the remarkably inexpensive air brushes at harbor freight.

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Tips for Members

If you just want to spout off, it is best accomplished as a blog posting. If you want to get more guidance and ideas from other members, ask a question as a new discussion topic. In the upper right corner of the lists for both types of posting, you will find an "+Add " button. Clicking it will open an editor where you create your posting. 4/16/2014

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