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Homebrew PCBs

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Message

Re: General Home-Brew CuCl chemistry and technique

2005-08-22 by Phil

--- In Homebrew_PCBs@yahoogroups.com, JanRwl@A... wrote:
> OK, Phil; I'm open to that!  Then, same question to  AP.  Where do
you get 
> it?  How many gm. of AP to a liter of  water?  Heated to mix? 
Warmed to use??  
> Can it be "regenerated",  or is it spent, once it "quits the first 
time"?     
>      Jan  R.

I've purchased it from CSI mail order for $18.
http://www.circuitspecialists.com/prod.itml/icOid/2825
I got my last Kg from Fry's - it was about $14.  250 grams per liter
of water.  It lasts for probably 15-20 moderate sized boards.  I don't
know if it can be regenerated.  I heat it to about 120 F via a hacked
aquarium heater and "dimmer" control.  I really should build a temp
controller someday...

Because it's clear and doesn't stain, it is 10x better than FeCl.  I
hate that stuff.  Here's a picture of my tank with AP in it.  The
stuff in the bottom disolves when I heat it. 
http://www.geocities.com/pcbs4less/tank/DSCN5374.JPG

Phil

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