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vivk

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Everything posted by vivk

  1. Photo Transfer

    Hi all If this thread is still going- gum arabic is used a lot in baking and sweet making so you could probably get it in baking stores or at your local chemist. I also watched Kristina's post which was great but she used ready mixed gum. We get it in powder form (here in Cape Town) but I dont know what proportions to mix it to get the best results. I tried .5oz in 45 ml and it was very thick, but the print did work. I dont know how it will fire though- we will see!
  2. Hi all my local hardware store sells a product called Black Oxide which is used to colour cement. Has anyone tried this is a glaze recipe? I dont know the chemical formula as their product website does not give that information, only that it is derived from anthracite and coal. So I dont know if it can be used for glaze? Can anyone help?
  3. Hi all Many thanks for all your input. On the strength of your answers I wont be wasting my time- was just interested in the idea!
  4. Hi out there. does anyone have a good recipe for a clear gloss glaze for white earthenware, firing to a max. of 1100 degrees centigrade. Many thanks for your help.
  5. Hi all. I am quite new to ceramic glazing- still very much in the experimental stage, always looking for alternative pigments. I recently found in my local hardware store a blue oxide powder used to colour cement, It is an intense blue pigment which I think is copper phthalocyanine. has anyone out there used this pigment in a glaze. I would love to know as I am looking for another blue oxide other than cobalt oxide which is expensive. Look forward to some replies.
  6. Thanks for all the advice. Have given up on the phthalocyanine, but recently did a pit firing using copper sulphate (dissolved in pool acid!) and got some interesting results. So I will keep experimenting.
  7. Thanks Peter for your response. I did a test firing today and guess what- it burnt off as you said- completely bleached result.Oh well, I tried. I suspect this is the stuff they use in washing powder called "blue" or something like that- makes your whites whiter. Anyway I am still curious as to see what it does if I combine it with other oxides- grind it with say, iron oxide. It must be very volatile and if I could find a way of removing the water from the molecule other than using heat?? any chemists out there who can advise? Or just stick with good old cobalt!
  8. Hi all I am quite new to glazing and am looking for tried and true recipes. I particularly want a good aubergine gloss glaze which fires at cone 6 oxidation. I am using stoneware clay. Any suggestions welcome!
  9. Aubergine Glaze Recipe

    Hi thanks for replying. can you get a purple from mixing cobalt oxide and Manganese dioxide?
  10. Hi all I am new to this forum so feeling "newish". Would anyone like to share their recipe for a clear gloss glaze using potash and whiting? I used various percentages of these and had a bit of crazing. Should I add boron - google research suggest this as a solution to crazing. All ideas welcome. Many thanks!
  11. Thanks so much- china clay is available here too, so I will give it a try. :)src="http://ceramicartsdaily.org/community/public/style_emoticons/default/smile.gif">
  12. Hi Marcia Many thanks for your suggestion- however I live in South Africa, so I use locally available clays. I am afraid I don't know what "Cornwall" is. I presume it is a local clay found in Cornwall? Also could you tell me what EPK is?
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