Homebrew PCBs

Rick:
     Results are all that matter.............    There is a good case 
for being able to view the progress of the etching as you can do  with 
the glass tray and the light underneath it.  The system with bubbles and 
a board hanging vertically does not allow for this........... It did 
sound like there was a good case for aeration though.

                                                                         
Howard

On 11/24/2012 03:38 PM, Rick Sparber wrote:
> Howard,
>
> With an etch time under 10 minutes and clean results, I'm happy with this
> simple approach.
>
> Rick
>
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of StoneTool
> Sent: Friday, November 23, 2012 2:59 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] success!
>
> Rick:
>       Have you opted against the bubble agitation system altogether?
> Sounds like a simple and logical method the way it was presented.
>
>                                                           Howard
>
> On 11/23/2012 01:14 PM, Rick Sparber wrote:
>> A friend looked at my pictures of my failed etchings and suggested I
>> lower my UV light and greatly extend the exposure time. I went from 7"
>> down to 2.5" and from 1 minute to 8 minutes. HUGE improvement. My
>> first test piece was done etching in 9 minutes with the ferric
>> chloride at about 75F. The second test piece used the same set up and
>> chemicals but the acid sat out in the Arizona sun for about 15 minutes
>> so must have warmed up. It etched in
>> 5.5 minutes.
>>
>>
>>
>> My next test cycle will be with all the same except I will try using
>> convection etching.
>>
>>
>>
>> Rick
>>
>>
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
>> ------------------------------------
>>
>> Be sure to visit the group home and check for new Links, Files, and
> Photos:
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>>
>>
>>
>>
>
>
> ------------------------------------
>
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>
>
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
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>
>
>
>