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Dissolve as much of the material in the water as you can - This normally requires hot water. Take normal care with hot things
Pour off the liquid leaving any undissolved behind, the liquid is a super saturated solution and MUST be free of any solid matter or it will crystallise in a random way.
Find a good example of a crystal of the material you used and tie a cotton thread round it and hang it in the solution - a pencil makes a good hanger across the top of the glass.
Put the glass somewhere where it won't be disturbed and watch your crystal grow. Occasionally take the growing crystal out and brush off any small crystals that may form to keep the shape pure.
It takes weeks!
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Posted:Aug 8, 2010
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