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In Topic: High-Tech Ceramic

Posted 15 Dec 2012

justanassembler, on 14 December 2012 - 12:55 PM, said:
From what I can see its likely some kind of zircon based ceramic--what are you interested in using it for? The term "high tech ceramics" in that context seems to be less a trade name and more a marketing gimmick.

I'm interested in using it for my line of jewelry - always interested in new materials... I see a lot of the big name fashion houses have created bangles rings watches from this material so I'm curious!

So should I start grinding zircons into my cone 6 porcelain ??
In Topic: Cone 6 Porcelain vs Cone 10 Porcelain

Posted 2 Aug 2012

Thank you for the reply Mark and Marcia - I appreciate your input.

I got my cone 10 porcelain but haven't used it yet as I am getting ready for a show and decided to go with what i know (cone 6 porcelain) in the meantime.

My question regarding glaze use wasn't clear - I wanted to know if I create a piece from Cone 10 Porcelain, and fire it to Cone 10, could I THEN use cone 6 or low fire (04/06) glazes to decorate? Or will I face issues?

I have done this with Cone 6 porcelain with no problems (Fire the piece to Cone 6 and then do a lower glaze firing).
In Topic: Best blue for colored clay

Posted 20 May 2012

hi matt,

I use Zircon Blue (Mason 6315) that I get from Pottery Supply house in Canada.

Depending on how much you use, you can get a nice medium blue from it.

I cant find a picture of it where we used it though or else I would share.

Hope this helps
In Topic: Firing gemstones, CZ's etc.

Posted 20 May 2012

This sounds very cool Antoinette!

I've heard about stones turning opaque and white - and it's not something I'm against happening - but are they more delicate? do they crumble? Do they look just plain ugly?

I would love to see some pics of your successes and attempts!

Antoinette, on 18 May 2012 - 06:19 PM, said:
Since the 70's I' ve fired beach sand with pebbles up to about 1/4" using clear glaze to place the sand/pebbles at low fire cone 04 and cone 6 and have never had issues of explosions, crazing or cracking. Actually the firing burns off the impurities/oxidation on the pebbles making whatever color of the pebbles more brilliant. I've gotten my sand/pebble mixture from New England beaches so the composition is primarily black, pink, and white granite.

To your point, based on my successes to date, I just recently tried firing semi- precious stones I got at a rock mineral store in AZ as well as petrified wood pieces - not so good results! At cone 6 placed using clear glaze, I got the results in the thread provided in the first response. Since the gems used were silica-based crystal structure, they all turned white! No explosions,crazing or cracking occurred though. So after a discussion with an engineer who works in the coatings business, I was going to try again, this time with a raku firing- lower temp. and very short firing. Again, in reading the threads, this might work...
In Topic: Porcelain and Ceramic Jewelry

Posted 20 May 2012

beautiful work lynny!

I have thought about leaving the inside unglazed - i am not very experienced with wet sanding. I did it once and it was so time consuming and i felt like i couldnt breath properly for a few days after (I had all the precautions - gloves, eye glasses, respirator).

And my time in doing this would certainly drive up the price.

Does wet sanding actually give it a good seal and make it non porous? Meaning, I don't want customers complaining later on that the inside of the cuff got stained from dirt/makeup etc.

aw dammit.. i'm just gonna use acrylics... hahaha *JOKE*

lynny, on 20 May 2012 - 10:05 AM, said:
IMG_0143.jpg IMG_0095.jpgHi all,
I havnt posted here since last year, but am still an avid reader of this great forum.
I make a range of jewellery and had to do lots of testing to get results that I'm happy with.
The coloured texture stamps bracelets are glazed all over and final fired on 3 pronged sitters.
The coloured porcelain is very much trickier. If I glazed all over and hung from a wire support, they stretched out of round.
So I now wet polish the interior, so they feel great against the skin- some I also polish the outside and leave unglazed.
But others I clear glaze on the exterior and fire them laying on the rim with some calcined alumina on the shelf.
The rings took me a long time to get a solution. The ones in this image are glazed all over and are sitting in little clay mounts I made for them and re-use.
You can see I use calcined alumina here to, and because its such a small surface a light wet polish after firing smooths this surface well.
Hope the images help IMG_0091.jpg