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porcelainbyAntoinette

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  1. Like
    porcelainbyAntoinette got a reaction from Rae Reich in Rolling Pins   
    Emma, porcelain clay is normally drier and because it has a larger particle size it is not so sticky ( plastic) My studio table is covered with Masonite( kitchen counter top)
    Unless your porcelain is very soft, it is better to use non absorbing surfaces ( including when you roll clay out) while you work with it, because it will stay workable for longer. 
    That being said, there is good advice on rolling pins. If you roll your clay between two layers of paper or plastic, even fabric;  interfacing ( the very thick one available from fabric stores used to stiffen up cuffs and collars) will prevent texture. I use slabmat from slabmat.com. If you are just starting out with slabs, I will suggest you use a piece of interfacing. 
    Remember to always peel the paper, plastic or fabric away from the clay and not the other way round. 
  2. Like
    porcelainbyAntoinette got a reaction from nancylee in Help! I Can't Center Anymore!   
    nancylee:
     
    As I got older, I learned that I have to be smarter with any ball size of clay that I work with. When I was young, I could use force and technique in combination with each other. The turning point for me came when we came to the USA in 1999 and I was faced with a totally different sitting position at the wheel and ended up with lots of trouble with my arms. I was forced to adjust. Mel Jacobson taught me during a workshop to make sure that I sit at a comfortable level with my knees and  arms; for me that is level with the wheel head, so that I can use the leverage of my body to help me center. I also use the leverage of the wheel to help me.  In my video on youtube https://www.youtube.com/watch?v=-lY_zumG3jE I demonstrate the coning technique that works very well for me. 
     
    My guess is that your hands and the wheel speed does not keep up with each other. There is a possibility that your wheel  may have a technical problem, that it is slower/faster than it used to be, while you still use the same pressure, but it is also possible that you have anxiety because you are under pressure to deliver and you became like someone that must walk faster than your legs can carry you ( that is a Afrikaans saying........hope it make sense to you)
     
    I want to suggest that you simply take a deep breath and go over your procedures again. If you centered before, you have the know how and you will be able to cure the problem yourself. 
     
     
  3. Like
    porcelainbyAntoinette reacted to LeeU in Antoinette Interviewed By Anja SlapniÄ�ar From Slovenia   
    What a lovely interview! Dynamite work, of course, no surprise there..but the personal story is engaging and an inspiration. Looking forward to the book. 
  4. Like
    porcelainbyAntoinette got a reaction from LeeU in Antoinette Interviewed By Anja SlapniÄ�ar From Slovenia   
    Hi Guys, I am not sure if this is the right place to post this, but I would like to share this interview with you. 
    I will be teaching porcelain in Europe again in 2018.
     
    This video is a glimpse of the fantastic opportunity I had in the summer of 2016. I taught in 6 different countries. 
    This video was made in Slovenia
     
     
     
  5. Like
    porcelainbyAntoinette got a reaction from Marcia Selsor in Antoinette Interviewed By Anja SlapniÄ�ar From Slovenia   
    Hi Guys, I am not sure if this is the right place to post this, but I would like to share this interview with you. 
    I will be teaching porcelain in Europe again in 2018.
     
    This video is a glimpse of the fantastic opportunity I had in the summer of 2016. I taught in 6 different countries. 
    This video was made in Slovenia
     
     
     
  6. Like
    porcelainbyAntoinette got a reaction from Marcia Selsor in Online Workshops   
    The next series of online classes are posted on
     TeachinArt
    Instructors to look for is
    Marcia Selsor that is pushing forward with discovery in Alternative Firing. 
    David Voorhees is giving tips about successful throwing of porcelain. 
    Connie Christensen makes a tea set; tray and all and later this year we will add her shino expertise to this school. 
    Nan Rothwell is the latest addition and we are very excited to add her stoneware throwing class. 
    Antoinette Badenhorst added 4 classes in porcelain from Understanding porcelain to making projects in hand building to wheel throwing. 
    Her pinching teapots for the complete beginner is very popular and the pinching porcelain teapots will be available late fall to early winter. 
    An introduction to understanding glazes will also follow later this year. 

    Instructors to look forward to is Paul Lewing, Curtis Benzle and Marie Gibbons. Each one bringing their specialty to TeachinArt. 
  7. Like
    porcelainbyAntoinette reacted to glazenerd in Iron   
    Posted Yesterday, 10:31 PM.
    " My clay changed from a grolleg based one to Southern Ice, which means I do not know which feldspar is in the clay! "
     
    High translucency bodies can have up to 20% more spars than a standard body.
    Grolleg ( Coleman's) runs 3.58% molar, and southern ice is probably above 4.25%. ( cone 10)
    Not uncommon to find sodium in highly translucent bodies to produce higher glass content.
     
    Nerd
  8. Like
    porcelainbyAntoinette reacted to Min in Iron   
    "I've also received information that the bone ash may be hygroscopic, changing the volume needed - Mississippi is extremely humid.... The suggestion was that I add more bone ash in increments to see if it may fix it." 
     
    Might be an idea to take it up to red heat and re-calcine it to burn off any moisture/water then store it in a screw-top container. Wouldn't have to fiddle around trying to guess how much water it's absorbed.
     
    John Post has done a lot of work on iron reds, his website is down until the end of the month but you can see one of his iron red recipes on the Glazy site. It uses NepSy for the spar instead of custer. There are a couple versions of it, one includes lithium carb. Don't know if this is of any help but perhaps a different direction to look in. 
  9. Like
    porcelainbyAntoinette reacted to Dick White in Iron   
    Antoinette - do you by chance have in your collection some old true G200 feldspar or slightly newer G200HP feldspar (both of which are unavailable now). The analysis of the old true G200 was close the old Custer, you could try that as a sub. Or if you have some of the G200HP when they switched mines to a higher-potash spar (hence the HP designation) you can mix it 70% G200HP/30% Minspar200 to attain the same content. The problem with trying to adjust around the current Custer is it has less potash than before (~7% now vs. ~10% before) but also less alumina (~15% now vs. ~17%) and more silica (~74% vs. ~69%) so just bumping up the amount of Custer in the recipe to regain the potassium will change other things too. Even if you recreate a recipe that is nominally exactly the same chemically, it may fire differently. Good luck with it.
  10. Like
    porcelainbyAntoinette reacted to neilestrick in Iron   
    Custer has changed, that has been proven. There's a recent thread that has the new formula. Iron will not change, nor will the bone ash.
  11. Like
    porcelainbyAntoinette reacted to Min in Iron   
    One thing that can make a big difference with iron reds is the firing and cooling schedule. Are you firing the same way in the same kiln? Any chance it's a faster cooling firing now?
    Also, have you tried a strike firing of one of the brown pots to 04?
  12. Like
    porcelainbyAntoinette got a reaction from anchorman in G 200, G 200 Hp And What Else.   
    Thanks guys. Just received a bag of each "current" custer and mahavir. Will start testing next week. I am interested in a very white translucent workable porcelain clay body, with as little bentones in it as possible. It seems like I ran into a gold pot of gurus!
    Will keep you posted. 
  13. Like
    porcelainbyAntoinette reacted to Kaolinwasher in G 200, G 200 Hp And What Else.   
    Nothing wrong with Custer feldspar  it has 72.47 silica 15.24% alumina and 10.87KN so you need less silica in the porcelain. and its cheep , I do use mahivar as well they must float out the siica because it has only 67% silica and 17.5 alumina and 14.5 KN but its expensive 
  14. Like
    porcelainbyAntoinette reacted to glazenerd in G 200, G 200 Hp And What Else.   
    the root cause..
  15. Like
    porcelainbyAntoinette reacted to bciskepottery in G 200, G 200 Hp And What Else.   
    http://www.lagunaclay.com/support/pdf/mfelpf01_Mahavir_Feldspar.pdf
  16. Like
    porcelainbyAntoinette reacted to Pres in S-Crack   
    I really don't like throwing a downer into the parade, but why worry about fixing a cracked pot. Any sort of crack in the pot is just a weakness waiting for something to happen. Could you sell it?  Could you give it away to a friend or relative? So you might use it yourself? If it is not cracked all the way through, sure use it at home, enjoy it until the next one come along. In the long run, best to not get into the habit of fixing cracks for any reason. The time you spend repairing it could be better used with a little more time making a replacement. At the same time, maybe lesson learned.  Hope I don't sound to harsh, but that is my take on cracks.
     
    best,
    Pres
  17. Like
    porcelainbyAntoinette reacted to neilestrick in S-Crack   
    Throw it out and make another one. S cracks are a part of pottery life, and should be expected from time to time. It cracked for a reason. There was something done wrong during the making process, and the crack is the result. Figure out what it was, throw out the pot, and make a new one without a crack. It's better to learn from the mistake and improve your skills than to waste your time trying to hide it.
  18. Like
    porcelainbyAntoinette reacted to Marcia Selsor in Marcia Selsor Alternative Firing Online Workshop   
    Just updated the handout information for this online course. It includes building a small raku kiln.
    registration is underway. The course begins March 13th through April 20th.
    http://teachinart.com/alternative-firing.html
     
     
    Marcia
  19. Like
    porcelainbyAntoinette reacted to Marcia Selsor in Marcia Selsor Alternative Firing Online Workshop   
    This shameful self promotion shows what will be covered in the 6 week course on Alternative firing. Besides building a small raku kiln,there are wheel throwing demos, texture demos, latex resist, and preparation for each firing process.
    So far there are participants from the US, UK and New Zealand. Registration is open at www.teachinart.com
     

     
    Marcia
  20. Like
    porcelainbyAntoinette reacted to neilestrick in Clay In Glazes.   
    I shoot for at least 10% clay in my glazes. They go on nicer, stay suspended better, and aren't so powdery when loading the kiln. I've got some glaze that have over 20% clay, and they are a delight to apply. They go on smooth, and are tough as nails when handling them.
  21. Like
    porcelainbyAntoinette reacted to Pres in Clay In Glazes.   
    Clay for me is not a bad thing, as I understand it, a certain amount of clay allows the glaze to stay in suspension longer thus not needing constant mixing. Pinks are big culprits when using tin and chrome, as they often have to be kept mixed to get the tin pink coloring as shown on test tiles. At least this is how I have experience it, and I do also add Epsom salts to aid suspension in the glaze.
     
     
    best,
    Pres
  22. Like
    porcelainbyAntoinette reacted to Magnolia Mud Research in Chawan, Yonomi, Tea Bowl, Tea Cup, Mug.......   
    Antoinette eloquently made the case for the statement:
    "It does not matter how it is designed, as long as it works and do not look like one thing, but function incorrectly".
     
    After viewing and reading carefully John B's 15 NECEA presentation, especially the segment regarding a 'hubcap,'
    I would add a summary corollary: 
     
    A tea pot is any pot used to make tea.
     
    LT
  23. Like
    porcelainbyAntoinette reacted to preeta in Chawan, Yonomi, Tea Bowl, Tea Cup, Mug.......   
    Platter? 
     
    this is an interesting question A. i've asked the reverse myself. When does a bowl become a plate? lately i've been watching how i eat and wondering what the most convenient instruments to eat food out of, once i learnt how to center and throw even walls (most of the time). i dont really 'sit down' and eat. i dont often sit at a table. i've discovered i now dislike the plate. its become formal ware for me. to be used at a table, or anytime i have to use a knife. 
     
    in my contemplation i found a platter or pie plate becomes my favourite bowl. i've found i like the gradual curve, not a sharp line that a cylinder has between floor and wall. so wide base and short walls. for meals. but the opposite for soups and cereal or a one course meal. i like my food separate (dont care about touching or not) and i like to see all the different foods i have. 
     
    in other words since i am holding the vessel in my hand i prefer a curve to sit in the palm of my hand than a flat thing. which is why even the pie plate or small platter does not work for me, but i'd rather use that than a plate. a gradual curved floor with a shallow wall.
     
    does that mean that the plate has become a bowl for me? or has the bowl become a plate? 
     
    i've lately been questioning the tea pot too. is the traditional design still the best design for today where one uses tea bags or herbal teas which can soak for a long time without tannic acid becoming an issue. or has the traditional tea pot been the wrong design for tea that wont soak long? or was it correct since tea was a communal affair and after a 4 minute steep all the 4 or 5 cups of tea were poured out. so then for me is a jug a better tea pot with a tea cozy so i can make the perfect quart of tea and drink for a while. with a jug i have access to every part to clean but i can only guess at the teapot's spout. cleanliness becomes an issue since i add milk to my tea.  then the design of the cup i'd like to drink out of completely changes. 
     
    much to think about
  24. Like
    porcelainbyAntoinette reacted to preeta in Chawan, Yonomi, Tea Bowl, Tea Cup, Mug.......   
    john absolutely right!!!
     
    i am a considered a tea snob - the india kind here. 
     
    the thing is there is a long tradition of tea of different kinds.
     
    but i feel tea bags - especially herbal (which i dont even really consider tea) needs to have its own tradition. not use a traditional tea pot that applies to another kind of tea. so i am wondering does tea bags need a teapot or pitcher spout, or like the chocolate pitcher does not need any spout at all. 
     
    i am thinking more of the holes and the spout. but perhaps its a moot point. just use a 12 oz mug to steep so one doesnt even need the teapot. 
     
    its because my own way of drinking tea has changed since crossing the seas. for me there is a difference between drinking tea (traditional loose leaf) and then there is drinking hot herbal water and then there is black tea bags. and so for me (since i do drink copious cups of black tea in tea bags and hate mixing milk and sugar each time) i need to find a tea pot design that meets my needs (like an 'open' 'pitcher' spout which i can easily reach and wash out properly milky tea as i wouldnt care about tea stain in a tea pot), where a tea cozy will keep it hot so i dont have to use the microwave and ruin the taste. i'd like that better than a thermos.   
     
    (says a person who cringes at tea balls and tea ball spoons and still uses a tea strainer)
  25. Like
    porcelainbyAntoinette reacted to SydneyGee in Perfect Fit For A Lid.   
    Directions not clear. My teapot does not hold water very well.


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