Homebrew PCBs

Rob,

You could try the sponge type paint brushes. That would get you the 
sponge effect, and still keep your fingers out of the soup.


On 10/8/2016 8:53 PM, Dennis Shelgren nojoeco@... [Homebrew_PCBs] 
wrote:
>
> Yes, of course gloves and glasses are required when working with 
> anything volatile.
>
>
> On Oct 8, 2016 8:52 PM, "Rob roomberg@... 
> <mailto:roomberg@...> [Homebrew_PCBs]" 
> <Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com>> 
> wrote:
>
>     I don't know about sponging hcl.... I'm not that brave.
>     I always wear nitrile gloves and glasses but I try to keep
>     distance between the wet work and me.
>
>
>     On 10/08/2016 10:33 PM, Dennis Shelgren nojoeco@...
>     <mailto:nojoeco@...> [Homebrew_PCBs] wrote:
>>
>>     The hcl/peroxide mix has to be occaisionally "regenerated" by
>>     having air put through it, like an aquarium bubbler/stone. If
>>     it's completely activated with copper and fresh or regenerated,
>>     you can actually etch with just a sponge it's that fast.
>>
>>
>>     On Oct 8, 2016 6:33 PM, "Rob roomberg@...
>>     <mailto:roomberg@...> [Homebrew_PCBs]"
>>     <Homebrew_PCBs@yahoogroups.com
>>     <mailto:Homebrew_PCBs@yahoogroups.com>> wrote:
>>
>>         My bottle of muriactic acid is at least 10 years old.
>>         I only use about a shot glass of the stuff each time I etch
>>         boards.
>>         I think thats about  50 ml.... so a 950ml bottle will etch 19
>>         batches......
>>         and a bottle costs $5 at the local hardware store......
>>         so I don't think I will be using ferric chloride ever again.
>>
>>
>>
>>         On 10/08/2016 09:18 PM, soffee83@...
>>         <mailto:soffee83@...> [Homebrew_PCBs] wrote:
>>>
>>>         Rob,
>>>
>>>         My guess is it's mainly for ferric chloride and stuff. That
>>>         mix you and I are using seems to generate its own heat
>>>         somehow, though I have heated it when it was acting weak. I
>>>         still haven't figured out why mine got weak, but I'm
>>>         guessing it's shelf life.
>>>
>>>         Take Care
>>>
>>>         ------------------------------------------------------------------------
>>>
>>
>
>