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Member Since 09 Mar 2013
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#64650 Base Of Pots 'chipped Edge' After Glaze Firing - Why?

Posted by Biglou13 on 18 August 2014 - 05:14 AM

Could be pluckng?
What kind of clay?
That's not a problem, a few passes with diamond pad and you're back to new.
Try putting some silica on shelf before next firing. See if it does it again?
Did all pots have this!

#64596 Grinding Tools

Posted by Biglou13 on 17 August 2014 - 07:41 AM

I use a stone same one for my chef/kitchen knives for flat tools

I need to find a link for cheap round stones for tools with curves and compound curves

I love SHARP TOOLS I need to learn to sharpen the curved ones

#64248 Ki-Seto Glazes

Posted by Biglou13 on 10 August 2014 - 12:07 PM

With few conversations I've had with John B. San . A lot of things in japan bend, break, even shatter modern pottery rules and thinking. Potters of 100 years past didn't think out side of box........the box did not yet exist.
The ki seto potter as most traditional potters use local; clays, glaze ingredients, kilns , and fuel, might as well add local traditions and knowledge.
The mino feldspar is much different than American feldspar.
I read some about this, lee love might be a go to guy for this information.

What's the formula for leach seto?

#64221 Reduction Kiln- Too Early?

Posted by Biglou13 on 09 August 2014 - 06:49 PM

I'd love a redux kiln.

But I'm a bigger fan of wood fired.
I'd consider getting some wood fired clay and getting those pieces fired.

But a good deal on redux kiln will be hard to pass on. I've recently seen some traditional glazes. That are amazing (Coleman's celadon, Malcolm Davis red!). That would keep me satisfied between wood firings.

I'm holding out that kiln works out. But in mean time get a bag of a good woodfired clay, and get those pieces fired . Warning this may start a new addiction! (Will).

It's never to early........

#63862 "throwing With The Eye Of The Clay" - Do You?

Posted by Biglou13 on 04 August 2014 - 05:06 PM

I've seen videos of a potter (who was speaking in German, so I didn't understand what was being said) who did that odd-looking tilt off to the side while centering back down after coning up. I wondered why he did it.

I do it just to show the clay who is the BOSS, and students think it looks cool!

#62981 Shelf Grinding

Posted by Biglou13 on 21 July 2014 - 07:54 PM

I'd love to see that.
Not to mention that some here uses fish in his designs.
And the outdoors are great for creative inspiration
And some fresh salmon would be amazing right now, smoked salmon!, gravlax, salmon sushi, sashimi, ........lucky bears!!!
There is prolly some granite content in rocks, which means there prolly is some feldspar in video also. not to mention silica,

It's video source of glaze material.

#62216 How To Correctly Dipose Of Old Glaze

Posted by Biglou13 on 11 July 2014 - 08:13 AM

we have a BOB bucket.  that we use to dump old glazes, and as a rinse wash bucket for glazing.   when there is enough we we strain and suspend if needed.  right now I have one that is a beautiful dark green, another that tested out like a celadon green.

BOB stands for bottom of barrel.   it saves from disposing the nasties.  

#62076 Course Clay Bodies

Posted by Biglou13 on 08 July 2014 - 09:52 PM

In oxidation 266. White and black Slip with clear. Mulloca grog (I think) Medium

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#62072 Course Clay Bodies

Posted by Biglou13 on 08 July 2014 - 09:40 PM

Med and coarse grog wood fired flashy clay body

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#61531 Favorite Glaze Recipes

Posted by Biglou13 on 29 June 2014 - 10:16 PM

One of my favorites is an American shino. The kusakabe book calls it "peach". Not sure why. It performs superbly. lots of different effects dependent on placement in kiln and clay, atmosphere

31 spodumene
39 neph Sy
8 soda ash
17 om4
5 epk


Pictures include side view, carbon trap detail, Carmel side, ash erosion


Ps. Really love natural woodfired effects but those don't necessarily count as glazes. I'm Also surprised there isin't much response to this thread yet, Please excuse IPhone photos

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#61402 Foot Rings And Puddles

Posted by Biglou13 on 26 June 2014 - 08:02 AM


#61302 What I Need To Know About Changing The Thermocouple.

Posted by Biglou13 on 23 June 2014 - 05:12 PM


(I learned a lot helping group/guild studio change t/c
and calibrate kiln)

Had to change. We just ran a few loads with cones 5 6 7 ended up having to make kiln hotter.

That is using cone fire mode.

But I get better results with custom ramp hold programs. And end up adjusting end temp, and hold time.

Yes I expected to need to calibrate. Unlike men, All thermo couples are not created equal. Chances are you're firings with old thermocouple were not correct either.

Unless you were firing cones prior to change. You will have to choose calibrate to cone, or calibrate to glaze performance.

Sounds like you didn't save or are familiar with previous cone performance prior to change..... I'd get kiln to proper cone first. Then adjust if necessary for glaze performance.

So yes you may have to sacrifice kiln load. Ok it's not that bad. Ours was off but still within ballpark. Yes kiln has to be loaded to calibrate to cones. According to skutt you need to leave 2 inches open in all directions around thermocouple. And you have to fire a full load. If you don't want to sacrifice a kiln load, load kiln with rejects, that you haven't thrown away.

Unfortunately one must deal with and understand some technical issues to insure consistent performance.

After you finally get it calibrated. I'd still run one cone for final temp in each firing until satisfied it set properly. From then only periodically or if you make any changes.

To further complicate you may have differences in cone performance in different parts of kiln. Like-- bottom of kiln is firing 1/2 cone cold, or hot. Hopefully it's a loading issue. If not then "Huston we have a problem". Which in our case led to diagnosing kiln with failing elements. (Elements outside of appropriate ohm range)

Hope that helps, and answer is not clear as mud.

#61068 Sanding Porcelain

Posted by Biglou13 on 18 June 2014 - 04:30 AM


100-200. Works fine. 400 almost too fine I rarely use

#59252 Clay Receipes

Posted by Biglou13 on 25 May 2014 - 11:20 PM

Goggle is you friend
Arbuckle, Alfred are good sources

I just made the zamek "perfect body"
I'm going to make so me cone 6 porcelain ish tommorow

#59202 Going Shopping

Posted by Biglou13 on 25 May 2014 - 08:36 AM

+1 for red Mud tools ribs
Not from clay store but hardware. Plywood ware boards. If you wanna get fancy slap on a few coats of oil finish,
Reuse from sandwich shop, 5 gal buckets with lids
Flexible diamond polish/sand pads
Extruder/ dies
Ware board rack
Bulls tongue
Cottle boards
Plaster wedging table with wire
Old towels
Good sound system with good play list

Dream. List
Shimpo whisper
Large japanese banding /throwing wheel
Bourry box woodfired kiln / a thousand hard bricks
Advancer or other fancy kiln shelves
Omega pyrometers
Gas fired kiln
Anagama kiln or noborigama kiln
Gas kiln
Mixing deairing pugmill
Floor drain
Private instruction from artist whose work I like
Studio assistant
Good burbon