Homebrew PCBs

-----Original Message-----
>From: Ben L <bhleavi@...>
>Sent: May 17, 2010 11:55 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: Old GL FeCl -very slow  etching copper
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>
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>> I found cupric chloride to be very slow at room temp, it benefits from heating even more than FeCl. HCl + peroxide certainly works fine at room temp though, until enough of it converts.
>>
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>I have never heated mine before.  In fact I have it on the back porch and have etched boards fine in cold weather.  I just pump lots of air into it.  Sometimes add a little HCl if it seems to be slower than normal.  I kept it covered when not in use but can still vent.  So times will leave it uncovered to reduce it down some.  I normally don't add any peroxide.
>
>Ben
>

How long does a board take to etch with this system?

Mark




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