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Translucent Plates


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#1 OffCenter

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Posted 06 August 2013 - 11:59 AM

Matt Oz, a few quick questions after browsing your profile gallery. I should probably know this but don't, are you Matt of Matt and Dave's Porcelain? Are you still working with that special porcelain that is almost glass? Are you adding glass, more silica or?

 

Jim


E pur si muove.

"But it does move," said Galileo under his breath.

#2 Wyndham

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Posted 06 August 2013 - 02:37 PM

Matt, Jim's post caught my interest. On your site you said your porcelain best fired in a mold. My question is, does the porcelain slump any into the press mold. If so it would help cut down on warping. One other thingshould it be fired to cone 6 bisk then refired to a lower  06 to 04 glaze firing like bone china?

Thanks looking forward to testing on some jewelry

Wyndham



#3 Matt Oz

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Posted 07 August 2013 - 08:54 AM

Matt Oz, a few quick questions after browsing your profile gallery. I should probably know this but don't, are you Matt of Matt and Dave's Porcelain? Are you still working with that special porcelain that is almost glass? Are you adding glass, more silica or?

 

Jim

 

Thanks for the interest Jim,

 

No I'm a different Matt. I'm still working on the glassy porcelain (I say glassy because it doesn't need a glaze, unless I want it really smooth) almost done, it's close to what was used in the old days to make porcelain teeth, high in feldspar low in kaolin. It slumps to much for normal potting, but if your missing any teeth I could probably help you out.

 

One thing I found out doing this, there is a point when your trying to maximize translucency where you lose whiteness (because it's basically on the verge of melting into a clear glaze), I ended up having to add opacifier if I wanted a good white.



#4 Matt Oz

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Posted 07 August 2013 - 08:55 AM

Matt, Jim's post caught my interest. On your site you said your porcelain best fired in a mold. My question is, does the porcelain slump any into the press mold. If so it would help cut down on warping. One other thingshould it be fired to cone 6 bisk then refired to a lower  06 to 04 glaze firing like bone china?

Thanks looking forward to testing on some jewelry

Wyndham

 

The glassy porcelain does slump into the mold so I decided to take advantage of that and do porcelain slumping. To make the plates I have been making flat discs setting them on top of the molds and firing to cone 6, the clay slumps into the mold and takes the shape of a plate with no warping like you mentioned. So the clay doesn't stick to the mold, I coat the bottom of the discs with a thin layer of normal porcelain and the mold with alumina, the bottom comes out looking like unglazed porcelain but luckily that's popular at the moment. This method seems to work best in shallow molds.

 

I could fire it like bone china but for now I'm trying to once fire or have a really low bisque, and just except that the bottom will look unglazed.

 

The recipes on my blog are pretty much a standard cone 6 porcelain, slumping isn't as much a problem with those. The recipes are sorely are out of date, I just threw them up there if someone wanted to mess around with them. The glassy porcelain recipe I haven't decided what to do with yet.



#5 Matt Oz

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Posted 07 August 2013 - 08:56 AM

Here are the translucent plates if anyone was wondering. My old digital camera doesn't do low light well, so everything is actually brighter than this.gallery_8487_351_23155.jpg



#6 OffCenter

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Posted 07 August 2013 - 09:36 AM

Thanks, Matt. Your work is incredibly interesting. I hope you post more info about this as it develops.

 

Jim


E pur si muove.

"But it does move," said Galileo under his breath.

#7 oldlady

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Posted 07 August 2013 - 10:15 AM

matt, beautiful work!

 

yes, i need a tooth.  lost it in 1967 when i could not afford a $75 root canal.  (didn't know i had a choice.)  and today i need an apicoectomy and $1300!  

 

how are you going to use this marvelous porcelain to help tooth repair?


"putting you down does not raise me up."

#8 trina

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Posted 07 August 2013 - 10:21 AM

my brother and sister in law are both dentists and when I need teeth i just ask them! When i get to my big computer I will post a hare i did with a mouth full of said teeth. T

#9 Claypple

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Posted 07 August 2013 - 10:56 AM

I think AtomicAxe did the right thing.



#10 Biglou13

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Posted 07 August 2013 - 08:50 PM

What did axe do?
Caution big brother is watching.
The beige is blinding!!!!!!
The middle of the road is boring

The true sign of intelligence is not knowledge but imagination.
-Albert Einstein

#11 Claypple

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Posted 07 August 2013 - 09:19 PM

Left the forum. I think I will do the same.  It was fun for a while. Best wishes!



#12 Benzine

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Posted 07 August 2013 - 10:41 PM

Left the forum. I think I will do the same.  It was fun for a while. Best wishes!


Why would either of you leave?
"Anything worth believing, is worth questioning"

#13 Matt Oz

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Posted 08 August 2013 - 04:22 AM

matt, beautiful work!

 

yes, i need a tooth.  lost it in 1967 when i could not afford a $75 root canal.  (didn't know i had a choice.)  and today i need an apicoectomy and $1300!  

 

how are you going to use this marvelous porcelain to help tooth repair?

 

Thank you for the compliments.

 

I was thinking of starting up my own back alley business, 20 bucks a tooth. Don't worry everything is sterilized and numbed with whiskey.



#14 Matt Oz

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Posted 08 August 2013 - 04:23 AM

Left the forum. I think I will do the same.  It was fun for a while. Best wishes!

 

Why not just take a break?



#15 Benzine

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Posted 08 August 2013 - 07:42 AM

 

matt, beautiful work!

 

yes, i need a tooth.  lost it in 1967 when i could not afford a $75 root canal.  (didn't know i had a choice.)  and today i need an apicoectomy and $1300!  

 

how are you going to use this marvelous porcelain to help tooth repair?

 

Thank you for the compliments.

 

I was thinking of starting up my own back alley business, 20 bucks a tooth. Don't worry everything is sterilized and numbed with whiskey.

 

Sounds like the way they do things, in Jim's neck of the woods.


"Anything worth believing, is worth questioning"

#16 oldlady

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Posted 08 August 2013 - 11:31 AM

matt, would your recipe for cone 6 porcelain work for lithopanes?  i would love to use a transparent body and use it in the mold i made of raku clay bisqued to 04.  i am sending a picture of it and of an impression done in little loafers cone 6 stoneware.  

 

can you suggest a way to create the impression and fire it? i assume that i  will i have to fire it in the mold each time i want a copy.  i can picture  firing it to cone 6 as it is so it would finish shrinking.  i am just afraid that once i use it to hold the porcelain i will lose the mold for any other use and i cannot make another one until the flowers bloom next spring.

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#17 Patsu

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Posted 08 August 2013 - 01:58 PM

 



#18 Wyndham

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Posted 08 August 2013 - 02:10 PM

Lithopanes would be a great idea.

Wyndham



#19 OffCenter

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Posted 08 August 2013 - 05:06 PM

Lithopanes would be a great idea.

Wyndham

 

Yeah, I've always wanted to do some but never got around to it. I've put paper in Frost and cast it so that it is paper thin and so translucent that approaches transparency.

 

Jim


E pur si muove.

"But it does move," said Galileo under his breath.

#20 OffCenter

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Posted 08 August 2013 - 05:13 PM

matt, would your recipe for cone 6 porcelain work for lithopanes?  i would love to use a transparent body and use it in the mold i made of raku clay bisqued to 04.  i am sending a picture of it and of an impression done in little loafers cone 6 stoneware.  

 

can you suggest a way to create the impression and fire it? i assume that i  will i have to fire it in the mold each time i want a copy.  i can picture  firing it to cone 6 as it is so it would finish shrinking.  i am just afraid that once i use it to hold the porcelain i will lose the mold for any other use and i cannot make another one until the flowers bloom next spring.

 

Why don't you just do it in a transparent porcelain like Frost or NZ6 instead of Little Loafers. You will not have to fire those in a mold and where the piece is thin, it will be very translucent.

 

Jim


E pur si muove.

"But it does move," said Galileo under his breath.




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