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Ash Glazes

Last year I started to use an ash glaze and really liked it. I have been doing some testing to change the color and I have been testing out other ash glaze recipes.

All of the test tiles are stoneware. They were fired in a gas kiln to cone 10 (2350 F). Each test tile was dipped once and then a second time halfway down.

Click on an image to see the larger version.

Whiting31
KT Ball Clay24
Silica22.5
Oak Wood Ash15
Custer Feldspar5
Dolomite2.5
Use the above base glaze - colorants are listed below with the picture to the right100 dsc04441
Red Iron Oxide
Cobalt Carbonate
8
3.8
dsc04414
Cobalt Carbonate
---
Iron Chromate
OR
Red Iron Oxide
Chromium Oxide
0.25
---
1

0.5
0.5
dsc04412
Copper Carbonate5 dsc04416
Tin Oxide
Copper Carbonate
3
1.6
dsc04422
---------
Red Art
Wood Ash
50
50
100
dsc04433

Throwing a Platter or Large Plate

I have been making a lot of platters recently and I thought I should do a video. The video shows how I throw my platters and plates.

Some tips I have learned:

- Make sure to leave a good amount of clay (1/2 – 3/4 inch) on the bottom if you plan to have a foot.

- Throw with dryer clay and less water especially if you plan to have a wide flat lip.

- Let it dry upside right until the lip becomes a little stiffer than leather hard, then turn it upside down (make sure the center doesn’t collapse and if it does let it dry longer upside right and place it on newspaper or something that will help soak the moisture from the bottom) and let it dry until it is ready to trim.

Throwing a Mug

Mugs are what I make the most of and every single mug comes out different. I don’t tailor the mugs for certain people but rather allow the mugs to be unique and call out to each unique and individual person. Below are a few steps and tips to remember when throwing mugs.

- Throw using the COPS method (center, open, pull, shape) – I will combine steps to make it faster.

- Make sure the bottom is compressed and free of any extra water before you pull. Also, the bottom should be the same thickness as the walls unless you plan to trim the bottom later. I don’t trim my mugs but rather roll a studio foot.

- Use a metal or plastic rib to scrap any excess slurry off the outside of the vessel.

— This helps the outside to be smooth.

— You can shape the vessel while you do this.

— It helps when transferring the vessel off the bat immediately after being thrown (your hands have more grip so you don’t drop or squish it in the process).

- The lip of the mug is important because that is where you put your lips and you want the liquid to pour out without dripping. I use the skin between my ring and middle finger on my right hand to smooth and shape the lip as a final touch.

Trimming a Bowl

Watch and learn to trim a bowl from start to finish. Gather helpful insight whether you are a beginner or an expert.

Some tips when trimming a foot:

- Make sure the vessel is leather hard and is securely attached to the bat before trimming.

- Check the bottom while trimming with the bounce technique or sound check, you don’t want to trim through it! These techniques also work when trimming the side.

- Be creative, the foot is important and should complement the overall vessel.

Val's LP Matte Modified Glaze Tests

I liked the look of this glaze and decided to test it out. The first picture in the table is the original glaze formula. The glaze is on both stoneware and porcelain. The test tiles were fired in a gas kiln to cone 10 (2350 F). Each test tile was dipped once and then a second time halfway down.

Click on an image to view it larger.

F-4 Feldspar30
Silica10
Kaolin25
Dolomite20
Barium Carbonate15
Use the above base glaze - colorants are listed below with a related pic=100
Copper Carbonate
Cobalt Carbonate
2%
0.5%
dsc02959
Chrome
Copper Carbonate
Cobalt Carbonate
0.5%
2%
0.5%
dsc02960
Red Iron Oxide3% dsc02961
Red Iron Oxide5% dsc02962
Red Iron Oxide7% dsc02963
Rutile4.4% dsc02964

New Kiln Firing

I built a small simple wood fire kiln in my backyard that fits about 7 small pots. It is built similar to a Ken Olsen fast fire but it is much smaller and easier to fire. I decided to try a single fire and I am pleased with the results. It took 9 hours to get to cone 8 and I started with a wet kiln since it had rained the previous two days and the tarp fell apart letting in a lot of moisture.

Dorian Beaulieu - Educator of the Year 2009

“The award is an honor bestowed upon Minnesota State Colleges & Universities faculty to acknowledge and reward exceptional individual professional accomplishment, and to encourage ongoing excellence, in teaching.” Taken from http://botaward.mnscu.edu/ please visit for more information.