Homebrew PCBs

On 17/07/2013 8:17 p.m., James wrote:
>
> Kerry, since you are in NZ - 1 Litre, 35%, $25, and $5 Courier
> http://www.trademe.co.nz/motors/car-parts-accessories/oil-additives/auction-616226654.htm
>
Red face, I had my trademe filter set for Taranaki. Still wish someone 
had tried percarbonate

2Na_2 CO_3 .3H_2 O_2 + 4HCl ? 4NaCl + 2H2CO_3 + 3H_2 O_2

>
> $30 NZ doesn't sound too bad to me.
>
> (To the international readers, that's about $24 USD)
>
> On 17/07/13 18:40, Kerry Koppert wrote:
> >
> > I live in a small largely agricultural country any chemical is difficult
> > to obtain (unless it has a household or agricultural use). I'd like to
> > try hydrochloric acid and hydrogen peroxide as an etchant and I can buy
> > HCl in the hardware store (for cleaning concrete) but H2O2 is a little
> > more difficult $25 / litre for 35% plus hazardous goods freight from
> > 300Km away.
> >
>
> [Non-text portions of this message have been removed]
>
> 



[Non-text portions of this message have been removed]