You can use feathers, human hair, or dog hair. Anything that has oil content will create a combustible effect to where it leaves a carbon and ash mark on the ceramics. It soaks into the pottery to create a cool design. You can decorate Raku with several techniques, and not all require that you apply glaze. Potters in the West rarely use glaze in Raku because of its toxicity. You can use other metals as a glaze in Raku, which each have unique effects.
The issue with Raku and glaze comes from how it uses a low-firing temperature. Hopefully, this sheds some light on Raku pottery. You have two types, with the original coming from Kyoto, Japan. Western Raku frees itself from the traditions that bind Japan, which allows it to reinvent itself.
For those who want a more spiritual experience, Traditional Japanese Raku has many deep abstract concepts and virtues within it, like harmony and compassion. You may want to learn more about the tea ceremony. This can help you understand the background. Try making Raku pottery for yourself to see how it looks. After asking my Pottery teacher and searching for hours for the….
Will the kiln get damaged? Will the pottery crack or break? These are important questions. When making pottery your clay goes through 7 different stages to get to the finished product. There is no…. The origin of the traditional pottery wheel remains a debate in some circles, but most agree that it first appeared in the Sumerian civilization in BC.
Sumeria exists in modern-day southern Iraq. Thus raku ware is only suitable for decorative uses. Metallic effects that look great out of the firing can tarnish and disappear with time and people have developed ways to preserve these with various fixatives and surface treatments. Do not buy raku ware unless this has been done. Raku firings often generate a lot of smoke, and people have developed different ways to try to contain this smoke.
Unfortunately some have developed and even promoted quite casual methods that pose significant dangers. Raku kilns can emit harmful even dangerous metal fumes depending on how pots are decorated and vapors of chlorine and sulfur from salts, chlorides, and sulphates. Inhalation of chlorine can cause chemical pneumonia, immune reactions, rashes, irritated mucous membranes, diarrhea, nausea, vomiting, cancer, brain damage, etc.
Smoke from raku is hazardous simply because ALL smoke is hazardous and possibly carcinogenic. Incomplete combustion "yellow" smoke produces the most hazardous substances i.
While some people claim to wear respirators with "smoke blocking filters" there is no such thing. This is why firefighters wear tanks of compressed air. To make this type f body, you simply mix the ingredients below:. Well, this recipe below lets you work with a great clay body that allows you to get the results that you want. You should make sure to fire it to around cone for the best results. Raku kilns are oftentimes made of different configurations, and you can make your own too.
But, there are a few things you must keep in mind before you start to fire this, and they include the following:. When you load this type of kiln, you put everything on a single level, and make sure that you leave many more spaces between the pots, and you should try to keep everything on an even plane.
Raku firing is fun, and you learned about the clays that you should use with this here. In general any stoneware or even crank clay would be suitable however there are also a variety of Raku clays available and when you are starting out it is a good idea to try a few different clays, if you can, so you can discover your own personal style.
The colour of the clay you choose will determine how the glaze responds, a darker clay would result in darker and muted glaze tones and would not be suitable if you want bright colours or for achieving a good contrast with the smoke for instance. Lighter clay bodies will result in brighter glaze colours.
I have used a variety of clays over the years and my favourite is a specialist Raku clay called Ashraf Hanna, which I use for my own work and also for my Raku courses. It is more expensive than other Raku clays, but I love it for the following reasons:. Ashraf Hanna is a lovely clay to work with for hand-building and coiling both large and small pots and sculptures. It has enough grog added to make it strong enough to withstand the Raku process but you can also get a really smooth surface.
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