On Jan 27, 2009, at 4:14 PM, Norton, Steve wrote:
Erik,
I know you are just starting and so many thoughts are being thrown at
you but here are a few more. Remember, you don't have to do everything
at once to make good CS but over time you can add improvements to your
setup. Your electrode spacing is a little close, especially if you are
not using a stirrer. If your electrodes are too close you will get
increased electroplating of the silver from the anode to the cathode
rather than the silver suspending in the water. It can also increase
particle size,I believe, caused by silver ions colliding with other
silver in suspension. A stirrer works to move the ions coming off the
anode out into the water and reduces these effects. Without stirring I
would use an electrode separation around 2 inches. Kathryn has
mentioned thermal stirring but two other common techniques are a
magnetic stirrer and a fish tank bubbler. The bubbler adds impurities
from the air and so is not the best but it is easy and quick. However
you can make a magnetic stirrer fairly easily (Google "diy magnetic
stirrer" for plans). The ones on the net may stir a little fast and
you may need to slow the stirrer down some (lower voltage, pulsing the
drive voltage, slower motor, add weight to fan drive, etc.)
As Kathryn also mentioned, yellow CS is not as good as clear CS which
has smaller silver particles. While there may be people on the list
making yellow CS, I am not aware of anyone. The pale yellow color is a
convenient way to determine when you should stop CS generation if you
have no other method of knowing when.
- Steve N
From: Nils-Erik Stromback [mailto:[email protected]]
Sent: Tuesday, January 27, 2009 9:55 AM
To: [email protected]
Subject: Re: CS>shortcutting of silver wires, what are the effects and
consequences?
I used 1/2", now after 2 shortcuts I changed it to about 3 cm. I
didn't use any stirring at all in the shortcut cases, but I do it
sometime with a plastic straw. I separated the wires to avoid shortcut
and also with the thought that maybe less silver ions are getting
suspended in the water and the big part of them getting plated out on
the cathode as they are so close.
I still dont understand why my CS does not go yellish as I have seen
in so many fotos on internet, no matter if I let the process run for
more than five hours.
2009/1/27 Norton, Steve <[email protected]>
Just curious but what spacing are you using between the anode and
cathode and are you using any type of stirring?
Thanks,
Steve N
From: Nils-Erik Stromback [mailto:[email protected]]
Sent: Tuesday, January 27, 2009 9:17 AM
To: [email protected]
Subject: CS>shortcutting of silver wires, what are the effects and
consequences?
hi,
Yesterday I was doing some CS and I forgot about it when I started
cooking, so time passed and when I remembered it had passed 2 and a
half hours and the silver oxide sludge had build a bridge between the
cathode and anode. Does this shortcut of wires affect negatively on
the particle size in the solution or in any other possible way?
I use 15 volts and a 75 ohm resistor so I guess that the current must
have raised to around 200mA when the wires got connected. When this
happens does the anode continue liberating positively charge silver
ions?
Thanks
Erik
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