Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Mark Robinson
<mark.robinson@...> wrote:
>
> Ben wrote:
> > Well I needed to make a board this weekend but did not realize that I
> > was out of the developer.  I use the M G Chemicals 600 series board
> > with positive resist.  Normally use the M G Chemicals developer which
> > is Sodium Hydroxide, but can not get it over the weekend.  Never have
> > found a place to buy the Sodium Hydroxide without ordering it in.
> > 
> > I tried some Washing Soda but so far it does not seem to do anything
> > to the resist.  How strong should the washing soda need to be mixed? 
> > or will the washing soda even work on the M G Chemicals positive
resist?
> 
> Try looking for caustic soda rather than washing soda.
> 
> It's in supermarkets and hardware shops here.
>

So far all I find is Washing Soda, Soda Ash, Sodium Carbonate which
are all the some thing.



Ben