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Sio-2 Clay - Porcelain(Black) - Black Ice


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#21 Min

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Posted 27 March 2017 - 11:33 AM

I've messed around a little with Plainsman's Polar Ice, it comes extremely wet also. This is from their website and the reason behind mixing it so wet. No clue if this is the same reason for your black porcelain being so wet but I was wondering if you dried it out a bit more if it would actually increase the plasticity like the Polar Ice does. Did they let you know which stain they are using for part of the black colour? 

 

"Polar Ice has extremely high plasticity (to properly pug it we must run it too soft). Others claim to be plastic, but they use the word in a relative sense (meaning a little less flabby than that other really flabby porcelain). Do not attempt to use Polar Ice if it is too soft (stiffen it before use to experience its full plasticity). To reduce the water content wedge it and flatten down onto a very clean plaster table or large bat (or you may be able to leave a lump under a cloth over night or longer).

The most prominent side effect of the plasticity is its stickiness, this body is extremely sticky. It will stick to your hands, to the table, to the cutting wire, anything that touches it. During trimming it will stick back to itself and tools. If you attach ware to the wheelhead with water to trim, it will stick fast there also. After trimming it balls up under your fingers if you attempt to round corners by pressing on them. However if you stiffen the body to optimal throwing stiffness, it will be much less sticky."



#22 Joseph F

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Posted 27 March 2017 - 12:00 PM

Min reading that and the entire story of the polar ice on the website is very similar to what I experienced. I ended up wedging the bag and then cutting it into balls and letting it sit out while I was throwing. Seemed the make the process easier. The only thing different is that he mentions it being hard in the box, but blackice wasn't like that at all. It was soft.

 

I tell you what though, having clay that soft is amazing when your making plates. I have been struggling with this hard highwater clay and I made a plate with the black ice, sooo easy. I will make sure next time I make plates to soften up my highwater clay before, because it was a 0 strain affair doing it with black ice. 

 

Hopefully I can stop using highwater if my glazes come out nice on this blackice! Got some in the bisque now and I have some tiles drying under a fan, that I am going to single fire with the bisque ware to see if I can get away with not having to bisque anymore. Since I spray I really have no need for bisquing, besides my stoneware being full of crap that needed to be burnt out. Time will tell. I will keep updating.

 

Thanks for the article.



#23 oldlady

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Posted 27 March 2017 - 12:52 PM

joseph, good luck single firing.  it takes longer, add a preheat to your schedule.


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#24 Joseph F

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Posted 27 March 2017 - 01:26 PM

joseph, good luck single firing.  it takes longer, add a preheat to your schedule.

 

I plan on using a preheat and a slow ramp. I would rather it take a few hours longer on a glaze firing then to have to do the whole bisque process + loading unloading.



#25 neilestrick

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Posted 27 March 2017 - 05:33 PM

I've messed around a little with Plainsman's Polar Ice, it comes extremely wet also. This is from their website and the reason behind mixing it so wet. No clue if this is the same reason for your black porcelain being so wet but I was wondering if you dried it out a bit more if it would actually increase the plasticity like the Polar Ice does. Did they let you know which stain they are using for part of the black colour? 

 

"Polar Ice has extremely high plasticity (to properly pug it we must run it too soft). Others claim to be plastic, but they use the word in a relative sense (meaning a little less flabby than that other really flabby porcelain). Do not attempt to use Polar Ice if it is too soft (stiffen it before use to experience its full plasticity). To reduce the water content wedge it and flatten down onto a very clean plaster table or large bat (or you may be able to leave a lump under a cloth over night or longer).

The most prominent side effect of the plasticity is its stickiness, this body is extremely sticky. It will stick to your hands, to the table, to the cutting wire, anything that touches it. During trimming it will stick back to itself and tools. If you attach ware to the wheelhead with water to trim, it will stick fast there also. After trimming it balls up under your fingers if you attempt to round corners by pressing on them. However if you stiffen the body to optimal throwing stiffness, it will be much less sticky."

 

What a joke! I'm supposed to take the time to dry out my clay every time I buy it? What about my students? They have to take it home and dry it out? Or I have to set out 1000 pounds of clay to get it ready for them? It's the mixers job to sell me clay I can use. If I wanted to mess with this I'd mix my own clay.


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#26 glazenerd

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Posted 27 March 2017 - 05:44 PM

Neil:

 

My 500lbs of technical grade kaolin came in this past Friday, the calcium hectorite will be in this Friday. Already have the other ingredients here to make up some Nerd porcelain. Even have a jug of Additive A on its way soon. So I will send out ten lb. samples to a select few in a month or so or two-three: soon. Might even add some oxide and stain to one bag just for Joseph. You can tell me what you think of it later. I still owe Matthew a bag of no run crystalline glaze as well. After studying this crap for seven years, about time to make something from it.

 

CRAP = carefully recreated apportioned porcelain.

 

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#27 Joseph F

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Posted 27 March 2017 - 05:53 PM

Nice Nerd! 

 

I agree with Neil that bags should come ready to use. However I find most of my bags are way to hard to use with ease and require a lot of strength to use. I would rather clay be softer then hard any day, but again the Black Ice wasn't sticky or to wet to use, it was just an adjustment. I was letting it sit out as I used the bag so that I could have something I was more used to. I assume if I threw this all the time it wouldn't be a problem at all. 



#28 glazenerd

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Posted 27 March 2017 - 06:02 PM

Joseph:

I have about 30lbs of stoneware out there that is bordering on silly putty. I have been pulling up walls by pinching it between two fingers; all the pressure it takes.

 

Nerd



#29 Joseph F

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Posted 27 March 2017 - 06:04 PM

Joseph:

I have about 30lbs of stoneware out there that is bordering on silly putty. I have been pulling up walls by pinching it between two fingers; all the pressure it takes.

 

Nerd

 

Hahah



#30 Min

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Posted 27 March 2017 - 06:25 PM

 

I've messed around a little with Plainsman's Polar Ice, it comes extremely wet also. This is from their website and the reason behind mixing it so wet. No clue if this is the same reason for your black porcelain being so wet but I was wondering if you dried it out a bit more if it would actually increase the plasticity like the Polar Ice does. Did they let you know which stain they are using for part of the black colour? 

 

"Polar Ice has extremely high plasticity (to properly pug it we must run it too soft). Others claim to be plastic, but they use the word in a relative sense (meaning a little less flabby than that other really flabby porcelain). Do not attempt to use Polar Ice if it is too soft (stiffen it before use to experience its full plasticity). To reduce the water content wedge it and flatten down onto a very clean plaster table or large bat (or you may be able to leave a lump under a cloth over night or longer).

The most prominent side effect of the plasticity is its stickiness, this body is extremely sticky. It will stick to your hands, to the table, to the cutting wire, anything that touches it. During trimming it will stick back to itself and tools. If you attach ware to the wheelhead with water to trim, it will stick fast there also. After trimming it balls up under your fingers if you attempt to round corners by pressing on them. However if you stiffen the body to optimal throwing stiffness, it will be much less sticky."

 

What a joke! I'm supposed to take the time to dry out my clay every time I buy it? What about my students? They have to take it home and dry it out? Or I have to set out 1000 pounds of clay to get it ready for them? It's the mixers job to sell me clay I can use. If I wanted to mess with this I'd mix my own clay.

 

 

You know, until you said this I didn't think twice about it. In the last couple years or so my other clay from the same supplier is coming much wetter than it used to, maybe it's the new normal here to get it sloppy wet. Polar Ice was developed by Tony Hansen so now that you mention it it is kinda surprising he is okay with it going out sloppy. (I'm assuming he has received feedback)

 

edit: at $70- for 44 lbs now it's going to bug me  :unsure:



#31 neilestrick

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Posted 27 March 2017 - 09:40 PM

At that price it should be perfect.


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#32 Joseph F

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Posted 28 March 2017 - 07:10 AM

Black Ice was $1.53/# from the online supplier. I am not sure how much it is from my local supplier, they wont have any in until 2nd week of April. I don't mind paying a higher price as clay is still extremely cheap. But I agree, the higher price should reflect on quality and ease of use.



#33 Marcia Selsor

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Posted 28 March 2017 - 09:23 AM

Nice Nerd! 

 

I agree with Neil that bags should come ready to use. However I find most of my bags are way to hard to use with ease and require a lot of strength to use. I would rather clay be softer then hard any day, but again the Black Ice wasn't sticky or to wet to use, it was just an adjustment. I was letting it sit out as I used the bag so that I could have something I was more used to. I assume if I threw this all the time it wouldn't be a problem at all. 

Joseph,

Most commercial clays are very hard when you open them. Before removing from the bag. Throw them on the floor on each side maybe even twice. Then, Slice and wedge. The thumping on the floor softens the clay significantly. There is some kind of thixotropic  development that happens after it is mixed.

Marcia


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#34 Joseph F

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Posted 28 March 2017 - 09:31 AM

 

Nice Nerd! 

 

I agree with Neil that bags should come ready to use. However I find most of my bags are way to hard to use with ease and require a lot of strength to use. I would rather clay be softer then hard any day, but again the Black Ice wasn't sticky or to wet to use, it was just an adjustment. I was letting it sit out as I used the bag so that I could have something I was more used to. I assume if I threw this all the time it wouldn't be a problem at all. 

Joseph,

Most commercial clays are very hard when you open them. Before removing from the bag. Throw them on the floor on each side maybe even twice. Then, Slice and wedge. The thumping on the floor softens the clay significantly.

Marcia

 

 

Marcia,

 

Thanks I do this with every bag I open. I also wire it in 4 parts, slam 2 together then wedge them up. It is still drastically harder than I would expect it to be. The SIO2 clay was a dream to work with really. I would gladly pay more for that experience. 

 

I think either my supplier has very little people buying the clay I use thus it is drying out in the bag. Which I find pretty crappy TBH, their bags have definitely went down in quality compared to when I first bought their products a few years ago. I have a bag of Helios that is still soft as the day I bought it almost 2-3 years ago, the bag quality is much higher grade of plastic. So either I am getting old stock and the clay is drying out in the bag, or HW isn't adding enough water. Or the 3rd option. I am a pansy and can't make a 4# plate easily anymore.



#35 Joseph F

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Posted 31 March 2017 - 06:21 PM

Well. Here are the results of a cup I fired. This cup was bisqued beforehand to cone 6. The test tiles were single fired. No Bloating. No cracks. No surface defects of any kind noticeable. I am out of the clay.

 

As promised the results of the firing:

 

IMG_20170331_185251-213x300.jpgIMG_20170331_185504-225x300.jpgIMG_20170331_185546-225x300.jpg

 

Props to SIO-2 for an amazing product. Even the non glazed tile is beautiful. First thing I plan to make is a tall bottle non glazed for my home. I am officially joining the single fire club. Woop woop, so all around success. Which is nice for me coming back from burnout. Very happy.

 

One thing I am finally happy about is I can actually enjoy leaving more of my pots clay showing. Before with the brown storeware it was just kinda meh, but this clay is so beautiful bare that I am happy to show more of the pot, which might increase a lot of my production as I can dip bisqued pots 3/4 of the way and leave big fingermarks in the glaze and be pretty happy with it. 

 

Now I just have to find my voice in my work. Finally found a body I think I can be happy with.



#36 High Bridge Pottery

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Posted 31 March 2017 - 08:38 PM

What is this? Pixel rations!?? I can hardly see them at 255x300 pixels. Always wanted to try single firing but thought the pots will fall apart.

 

It's also 02:40  :blink:


youtube-logo-50x50.png facebook-logo-50.png instahack.png?1

 


#37 Joseph F

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Posted 31 March 2017 - 08:43 PM

What is this? Pixel rations!?? I can hardly see them at 255x300 pixels. Always wanted to try single firing but thought the pots will fall apart.

 

It's also 02:40  :blink:

 

For you: 

 

http://josephfirebor...0331_185251.jpg

http://josephfirebor...0331_185546.jpg

http://josephfirebor...0331_185504.jpg



#38 High Bridge Pottery

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Posted 31 March 2017 - 08:57 PM

Now I can see why you are happy, it looks awesome  :D


youtube-logo-50x50.png facebook-logo-50.png instahack.png?1

 


#39 Joseph F

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Posted 31 March 2017 - 09:18 PM

Now I can see why you are happy, it looks awesome  :D

 

Those tiles are single fired too. That is the best part. I spray my glazes and bisqueing was so meh for stoneware. Now I can throw, dry, spray, and glaze fire. Much more awesome than loading and unloading a kiln 2 times. Spraying takes a lot of time, so being able to skip the bisque helps make up for that time and lowers bottleneck of cooling. 

 

Now like I said I just have to find my aesthetic. 



#40 oldlady

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Posted 01 April 2017 - 11:28 AM

joel, single firing is not that hard.  it just depends on what kind of work you want to make.  if i can do it, you can, too.


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