[hackerspaces] Copper Through hole plating

[M]

http://www.jim.or.jp/journal/e/pdf3/43/07/1593.pdf

It acts as a leveler... a brightener, in plating speak.

Cheers,

 -M


On Wed, Dec 12, 2012 at 6:40 AM, B F <bakmthiscl at gmail.com> wrote:
> I am a chemist, with limited experience in pickling and etching.  As
> such, I don't see what the green dye was for in the formula.  Does it
> play any active role?
>
>
> On Tue, Dec 11, 2012 at 1:54 AM, M <dblmca at gmail.com> wrote:
>> On Mon, Dec 10, 2012 at 10:25 PM, Andrew Frazer
>> <andrew.frazer at stellascapes.com> wrote:
>>> Hi NSL folks from New Zealand..
>>>
>>> I was interested to see in your wiki, your THrough hole plating project   ( http://wiki.032.la/nsl/Through_hole_plating ).   I was wondering if anyone could help me with two questions?
>>>
>>> (a) In your project you've Janus Green B as a brightener.  I can't find any reference to how much to use
>>
>> Its a very small amount.. in the neighborhood of 10~50ppm.
>>
>>> (b) Can anyone make a suggestion as to where i can purchase Janus Green B
>>>
>>
>> Its normally very expensive.. but it seems to be on sale at our local supplier.
>> https://www.spectrumchemical.com/OA_HTML/chemical-products_Janus-Green-B_JA110.jsp?minisite=10020&respid=22372
>>
>> The solution works very well the first couple of times, but I had
>> issues with trying to keep the solution working properly over an
>> extended period.  I should probably have taken a pH reading when I
>> started and tried to get the solution to stay at that level.
>>
>> A couple of months ago we decided to get a commercial machine.  It
>> didnt come with chemicals or anodes... so we will be hackerspacing the
>> materials for this new rig pretty soon.
>>
>> http://www.flickr.com/photos/nullspacelabs/8096189458/
>>
>> Cheers,
>>
>>  -M
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