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Essaily

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Everything posted by Essaily

  1. REcently I made a slab plaster for drying my scraps and discovered a Spanish sulptor who discovered a method of setting plaster in 5 minutes rather than 30 minutes. This was quite exciting idea and tried it and it worked just as he suggested. Simply add 1% finely ground already set plaster into your mixture and it will quickly set. Adding more finely set plaster speeds up the setting time, though I'm not sure how it affects the drying off time. All the best with that!
  2. Refractory bricks (used)

    I'm also making a little kiln and my own refractory bricks. A pizza oven maker did a test on several brick recipes and found that 40%-50% grog and 50%-6o% fireclay made fairly durable heat resistant and thermal shock resistant bricks. These recipes are also used for raku ware I noticed!
  3. Homemade Kiln Plans

    Hi, if you're still looking for an inexpensive kiln you can make for virtually nothing - you might like to check out: 1.New Zealand Potter Pete who has experimented building several wood fired kilns. 2. Lisa Orr fires to earthenware clay to cone 2 in a couple hours 3. Kiln from clay, grass and organic matter by who sucessfully fired bricks and kiln shelves and hundreds of pizzas (not at the same time)4. demonstrates a tiny gas kiln he made all the best with that!
  4. Hi noticed your interesting clay question, presently I'm cleaning clay and sieving out the sand, and using a fine screenprinting mesh to separate the sand from a thin, runny slip. I dry it in towels in bucket, the Japanese potters use this method, rather than plaster bats, which always seem to get stuck to the clay! I think its worth recycling your terracotta, vinegar and epsom salt also works for me too - no smell.
  5. I searched everywhere for info about how to make this exact glaze. Does anyone have any ideas or recipes for a speckled, erupting ISHIHAZE glaze? A is here. Thanks.
  6. Ishihaze glaze recipe

    I can see the pitting in your red glaze, Weeble - really like that look, like a rock surface! I watched the video again just now, to find out why I like it so much, I don't know, I think its so humble looking with no trace of the maker except for the uneven throwing and understated glaze - that's the reason. Is it food safe btw, with all those pits and bubbles? Thanks for the name of the clay. Not sure we have it in Oz. Shall make my own.
  7. Ishihaze glaze recipe

    Thanks to all replies, I really appreciate your info! I'll check out making the slip over grogged clay - sounds like a great technique.
  8. I just bought a bag of Fine Grog. However on closer inspection its not so fine as I expected. Is there a dust safe way to make it finer? Would most people use a mortar and pestle?
  9. Refining Fine Grog

    Thanks for the great ideas! I shall try wet pounding and sieving. Thanks for the helpful advice all!
  10. Refining Fine Grog

    Thanks, I may try a blender or make a ball mill.
  11. Ishihaze glaze recipe

    Thank you all for the speedy reply and information. A video called Japanese Pottery History said there is Potash and iron in the clay body, so maybe that's it. I was about to ask can you add GROG to the glaze or the clay to create this effect and the answers below suggested this. What is it like round2potter to throw with the grog clay? I just bought some fine grog today, but it doesn't look so fine to me and i'm wondering how to make it finer. I wonder if I can make a billyjoesbutterwhite by adding some iron to the body? Or Mark, do you know where to find the recipe please? Or would iron shavings from a bbq scourer do the trick? How much exactly would I need to use? And is it food safe with so much iron in the clay?
  12. I would like to mix a porcelain clay body with a stoneware clay body. Has anybody tried this before? What happens after a bisque fire? Which temperature do you follow for the bisque & glaze fire - the porcelain body or the stoneware? When it comes to glazing, can I use an earthenware premixed glaze on this mixed body? Will it be food safe if I leave it unglazed? Thanks for any advice most welcome! I haven't a clue.
  13. Mixing porcelain clays

    Thanks all for your informative posts! I looked at the packaging and noticed it is already mixed with stoneware. Let's see what happens.
  14. Were you able to find a place to fire? Someone fired some buttons in a gas propane , but please be careful with the ceramic fibre, quite dangerous to inhale or touch.
  15. I experimenting with different types of rubber gloves to throw and surprisingly it works. There are hypoallergic types, though I have to change often. The clay makes my skin have a reaction, especially the stoneware. I think the ingredients in the clay might be pretty harsh on your skin.
  16. Kiln Help - Can I build one?

    Just found the link for $70 gas kiln! But just found a couple links - Ian Gregory's flat pack kilns look interesting. They use propane to fire and ceramic fibre. This fabric though is irritating to skin. Otherwise seems to work great. Also search on flickr someone put up Build Easy Propane Kiln from bricks. There's step by step pictures and you can contact the builder. He says he fires to cone 10 easily.
  17. Kiln Help - Can I build one?

    Thanks for the warning, much appreciated! Actually they only did a bisque fire for their bricks, no glazes.
  18. Kiln Help - Can I build one?

    I saw someone make one for $70 using gas and wool blanket insulation. (I'd be a bit worried about the asbestos though). Another kiln idea I saw that was almost free was a Rocket Kiln - made of cob and clay and the clever inventors not only cooked tonnes of pizza and turkey but fired a kiln shelf and bricks. Just search 'DateFarmer and Rocket Kitchen' on youtube. I guess it depends on what kinds of effects you like to create on your pottery.
  19. Shoulder Tendonitis/Bursitis

    Know what you mean Melissa, I'm too young too! I've been treating my bursitis with ginger and tumeric - plenty of curries! It's helped a lot as pain is not so frequent now. Recently I found out about fresh pineapple for inflammation, now I hardly ever feel pain any more and can walk without limping.
  20. If someone needs are large amount of sodium silicate / magic water I wondered if Sugar Soap is a safe substitute to use instead of Terra Sigillata? I checked out the ingredients in Selley's Sugar Soap powder and it has the exact ingredients as the Magic Water terra sigillata recipe I discovered on the Ceramics Arts Daily forum. Neutral salts 60% - Sodium carbonate -30% Sodium metasilicate, pentahydrate -10% Other ingredients determined not to be hazardous thanks!
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