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Posted in response to Re: Re: Re: Re: Re: synthetic opal synthesis from Henry Barwood on July 22, 2007 at 19:32:13:

Re: Re: Re: Re: Re: Re: synthetic opal synthesis

Henry, thanks for the info, here are a few quetions, I'm sure I'll have lots more if I continue to pursue this.

will concrete waterproofing work or would I need the pure grade of teos?

is methanol required or can ethanol be used? I know where I can get pure ethanol. I'ts called everclear at your local package store.

will household amonia work 'as is', or does it have to be distiled to get amononium hydroxide?

Can I do this using normal common sense precautions, or is it realy dangerous handling these chemicals?
presumably it is safe since L.Cram does it in his shed out back, and youve done it at home I suppose. I just dont want to kill myself ;)

I've looked up the stober method, but could you put it into plain english for a non chemist layman like myself? in other words, what proportions to mix the chemicals, in what order at what temperature etc.? Is there something like a simple step by step recipe that I could follow?

how do you get the correct size silica particle to form, what determines the size of the spheres?

I've read that it can take a year for the particles to settle out, are there any shortcuts to make it a faster process?

any details from your experience that youre willing to share would be appreciated.

From Mike - July 23, 2007 at 09:36:30

Message: 64677

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