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Graeme

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  1. Sugar/candy Raku

    Peter. I've never used sugar in raku. Perhaps you are thinking of black firing, where sugar is thrown into the kiln at the top temperature, and the kiln tightly sealed. Any gaps allowing air to enter will result in grey patches. Cheers. Graeme. .
  2. Iron Oxide(S) And Rust Formula

    I used to put steel wool in some stable glazes, for a nice "spotty" effect. First, I'd put some steel wool inside a pot to be bisced. The steel wool would then crumble easily, so if you wanted to weigh it, it was easy to handle. In reduction, the spots could move a bit, which is why I recommend using stable glazes. And I think the spots show up better in pale glazes. Have fun. Cheers. Graeme.
  3. Can do. The only reason, I moved the burner closer to the aperture, to begin with, was because the temperature plateaued. So my solution was to move the burner closer, and turn up the gas, which apparently, created a reduction atmosphere. The next time I fire, I will keep the burner further back, and increase the temperature more slowly. ------------------------------- If there is any difficulty in moving the burner back, another method to increase secondary air is to place a small fan behind the burner, if that is possible. Not too close, as you don't want any dust to blow into the kiln and onto the glazes. Cheers. Graeme.
  4. The dreaded S crack

    When I first started in pottery, using a local clay I dug and prepared, I had a lot of S cracks in plates. I started throwing on pieces of canvas. Cut under the canvas to release the pot off the bat or wheel. There's no stress on the clay from the cut-off wire. The canvas easily peels off the pot when you are ready to turn. The base of the pot is evenly flat - you may need a bit thicker base if you want to turn a footring. Cheers. Graeme.
  5. to keep glaze in suspension

    I use epsom salts - a couple of teaspoons per kilo of glaze. I've found it keeps glazes from settling into a hard lump in the bottom of a bucket, even if the glaze is not used for months, or even years. That includes crystal glazes with no clay, or one of the raku glazes I use which is - frit 100 bentonite 5. Cheers. Graeme
  6. raku - how to remove smell

    I've found that washing the pot, while it is still hot from the reduction tin, with some dishwashing detergent. gets rid of the smell. The pot is hot enough to sizzle when it hits the water. For reduction, I use eucalyptus leaves and/or newspaper. Cheers. Graeme.
  7. How to get glaze off of shelf

    If it is not inconvenient, could you just turn the shelf over? Put something under the blob to keep it off the shelf below, if there is a danger it would melt and fall off. Maybe it would then be easier to grind the blob off. One thing to watch out for if grinding with a carbide disk, a lot of heat is generated, which could melt the glaze and gum up the edge of the disk. Only do it in short bursts.
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