raku clay mold
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raku clay mold
Just made my first mold -raku clay....After a week it is 'leatherhard'...Now what do I do. I need a schedule for firing it o bisque then what schwdule do I use for slumping into it? Would it be different than BE molds?
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- Posts: 468
- Joined: Sun Mar 09, 2003 3:20 pm
- Location: Columbus, Ohio USA
When I bisque fire I set the kiln to heat over a period of about 5 hours to bisque temp ~1700 f and then shut the kiln off. Just let your clay dry to bone dry before firing. Drill some air vent holes before firing too.
Here is a link to a cone chart that gives a list of cone firing temperatures and heating rates. With cone firing the slower you fire the lower the temperature you have to fire to.
http://www.miniworlddolls.com/evenheat/ConeInfo.htm
You can fire raku clay to any of a bunch of different temperatures and they will all work. A cone range of 08 to 06 will work fine. The higher temps will give you a slightly tougher mold..
Fire like any other mold with your glass. Kiln wash before firing the glass.
Here is a link to a cone chart that gives a list of cone firing temperatures and heating rates. With cone firing the slower you fire the lower the temperature you have to fire to.
http://www.miniworlddolls.com/evenheat/ConeInfo.htm
You can fire raku clay to any of a bunch of different temperatures and they will all work. A cone range of 08 to 06 will work fine. The higher temps will give you a slightly tougher mold..
Fire like any other mold with your glass. Kiln wash before firing the glass.
Re: raku clay mold
feel it with your cheek. if it's cold, it's not dry enough.doctac wrote:Just made my first mold -raku clay....After a week it is 'leatherhard'...Now what do I do. I need a schedule for firing it o bisque then what schwdule do I use for slumping into it? Would it be different than BE molds?
i bisque at
400 850 0
100 1050 0
400 1650 30
off
don't open until cool