Homebrew PCBs

On Wed, 11 Oct 2006 18:04:32 +0200, Philip Pemberton  
<ygroups@...> wrote:

>
> They've already done it with acetone (or at least the stuff that isn't
> adulterated with perfume, vitamin XYZ and whatnot). Last time I tried to  
> buy
> straight acetone, I ended up explaining exactly why I wanted it (removing
> toner and photoresist from PCBs, and stripping enamel paint). I still  
> ended up
> leaving empty-handed ("you need Government authorisation to buy that,  
> have you
> tried nail varnish remover?"). Even sodium carbonate (used to neutralise  
> FeCl
> etchant) is a pig to get around here.
> Some days I think the Government are doing all they can to stifle  
> innovation
> in this country. If they keep going the way they are, we're going to  
> have a
> nation with no scientists ("too dangerous"), no investment from sci-tech
> companies ("ooo, their government don't like our kind, let's open a lab  
> in
> Berlin instead of London") and an economy based on selling houses and  
> land to
> developers for the highest profit...
> </political-rant>


The sad thing is, none of the restrictions is likely to make much  
difference to terrorists, they'll get it anyway.
I'm pretty sure i'll still get those things "no questions asked", but  
maybe some years down the road...

Maybe you can use lye instead of the sodium carbonate?

What does it take to get the required authorisation? Would be interesting  
finding out...
But even if it is not difficult, laws like that will kill of the remaining  
chemicals shops (which are only just slightly more commonplace than  
rockinghorse sh** anyway).

ST