cracks when rolling clay coils
Posted 25 July 2012 - 06:56 AM
Posted 25 July 2012 - 07:56 AM
Posted 25 July 2012 - 10:10 AM
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Posted 25 July 2012 - 11:18 AM
A foolproof way is to roll your coils on a slab of clay. Works wonders.
Posted 27 July 2012 - 12:53 PM
If your using a stoneware that is too gritty or even has the finest of grog in, it will be prone to cracking more so when rolling or bending than a smooth throwing stoneware such as Earthstone Extra Smooth. It could also be that your clay is too dry/of an inconsistent moisture content. If you wanted, you could dry it out completely, crush it up into reasonably small pieces, slake it down with water (leave it to soak in the water until saturated, probably overnight, then pour off excess water, squash it in your hands to make an even consistency throughout, put on a plaster bat to soak most of the water out until it reaches a soft kneading consistency and then re knead to start from scratch - at least then you know that the moisture content is even all the way through and it is not too dry or dryer in some areas than others - if it is a year old I suspect this is the most likely cause of your problems - so try it.