Homebrew PCBs

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:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>



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