Crystal Power CeLL by John Hutchison

[Feynman]

I have not abandoned this area of research;  I'm currently in contact with materials suppliers.   

[AbbaRue]

I read that Rochelle salt melts at 75 C.
I am wondering if it is still piezoelectric after it's been melted and then left to solidify.
Anyone know the answer to this question?  I haven't been able to find any info on it.
If it can be melted and then solidified again it can be shaped.
This also could be what is melted when the cell is placed on the burner.
When it solidifies it would bind all the other ingredients together.
It would be interesting to see what effect the HV treatment would have on it as is solidifies again.
Might have similar characteristics to making an electret. 
I guess I will find the answers to these questions as soon as I can get some to test.
I bought some cream of tartar and plan on getting some sodium carbonate to make it.
I read sodium carbonate is used in swimming pools to up the pH, this sounds like a good source.
I got the cream of tartar at the bulk barn for 88 cents per 100g.

[Feynman]

I think you can make sodium carbonate from sodium bicarbonate.  I will look up tomorrow.

[AbbaRue]

Yes you can make sodium carbonate from sodium bicarbonate but the process requires leaving the oven on for about 4 hours.

http://www.seawhy.com/xlroch.html

[Koen1]

You can also simply buy some rochelle salt.
It is not really hard to come by nor is it very expensive.