Homebrew PCBs

On 20/07/2013 5:45 p.m., Kerry Koppert wrote:
>
> On 20/07/2013 9:47 a.m., Jim wrote:
> >
> > Have you tried a beauty supply store? At least here in the states,
> > "40 wt" (10%) H2O2 is widely available and relatively inexpensive, as
> > a hair coloring agent.
> >
> > Since you have lots of beautiful blonde Australian women, it seems to
> > me that peroxide would be readily available downunda.
> >
> > 73
> > Jim N6OTQ
> >
>
> It seems to have gone out of fashion in New Zealand. 50 years ago you
> could buy hydrogen peroxide in a chemist shop (drugstore) or a grocery
> store. Now they seem to prefer powder (sodium carbonate?) and it's very
> expensive.
> Next board I make I'll be trying 10 g of percarbonate in 100 ml of water
> plus 100ml of HCl.
>

OK it worked fine, you need to be a little patient adding acid as the 
carbonate releases CO2 initially. Also the toner was getting soft but 
this may be because I added too much acid.

>
> > >________________________________
> > > From: jiburat <jiburat@... 
> <mailto:jiburat%40yahoo.com.au> <mailto:jiburat%40yahoo.com.au>>
> > >To: Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>
> > <mailto:Homebrew_PCBs%40yahoogroups.com>
> > >Sent: Thursday, July 18, 2013 8:36 PM
> > >Subject: [Homebrew_PCBs] Re: Sodium PerCarbonate
> > >
> > >
> > >Good idea, I see no reason why it wouldn't work. I'm going to try it
> > >myself, I'm from AUS and H2O2 is just too expensive here
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
> [Non-text portions of this message have been removed]
>
> 



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