Message 32564 of 39188 in General Discussion

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> Apparently distilled water + boiling + mild agitation and slow 
> bottom-up freezing are all good factors.

A factor regarding storage once you succeed in clear ice, is that you're using 
a standard home freezer.  These freezers usually have a defrost cycle which 
will contribute a bit of trouble in getting a truly solid freeze, which causes 
a lot of problems with strong opacity in the center (which I'm sure you know 
are just fractures and air bubbles).  If you've been doing a lot of 
experimenting and watching old attempts, you've probably also noticed that ice 
will become more opaque with time.  True deep freezers (industrial is best, 
but home versions exist) should be better if you really want to make a go of 
this.

-- 
Cody