Homebrew PCBs

----- Original Message ----- 
From: "DJ Delorie" <dj@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, April 11, 2007 2:09 PM
Subject: Re: [Homebrew_PCBs] Newbie questions


> 
> "Leon" <leon355@...> writes:
>> You don't need a darkroom, standard positive resist isn't affected by 
>> daylight or artificial lighting during the process provided that it is 
>> developed soon after exposure.
> 
> Are the chemicals rather tame these days too?  I wouldn't mind tring
> out photoetch, but I'm not a big fan of having lots of chemicals in
> the house.

Dilute sodium hydroxide solution (about 10g/litre) is what I use.

Leon