Homebrew PCBs

For single use the 3% just adds more water.

If you are doing the copper chloride bit
the 3% tends to add too much water and over
time upsets the chemistry.
I'm a newby, I've only been using my original
batch of CuCl for five or six years.


On Sun, 8 Apr 2018 00:22:51 -0400, you wrote:

>So what is the advantage of using 12% peroxide instead of the drugstore 
>3% peroxide?
>
>I use 50ml of muriatic acid mixed into 100ml  of drugstore peroxide.
>All of my etching is done in about 4 or 5 minutes.
>
>http://www.learnmorsecode.com/laminator/hotcakes.html
>http://www.learnmorsecode.com/ch/index.html
>http://www.learnmorsecode.com/DC/index.html
>
>Rob KB3BYT
>
>On 04/07/2018 05:22 PM, Keith B kabowers@... [Homebrew_PCBs] 
>wrote:
>>
>> Look for clear hair bleach. I think it's around 12% (40 deg. Baume?);
>> strong enough to burn your bare hands.
>> I understand janatorial supply shops have it even stronger, but it
>> starts to get dangerous and these days may find the police checking
>> you out.
>>
>> I got mine from the local Sally Beauty Supply.
>> In this part of the US they seem to show up
>> near WalMarts.
>>
>> On Fri, 6 Apr 2018 21:45:00 -0700, you wrote:
>>
>> >Copper clad board using muriatic acid would like to find better than 3%
>> >hydrogen peroxide if possible. In the usa LA california to be exact.
>> >Also what are some of the better methods of making a pcb cheaply
>> >BTW if needed I have 99 uv led on a circuit board built that a while ago
>> >just would need a cheap uv kinda etch resist suggestions welcome there.
>> >terramir
>>
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