Homebrew PCBs

It can be convenient to bath etch until most of the copper is gone, then 
direct etch (like with a Q-Tip) the parts that are left.

Kerry


roycepipkins wrote:
> Like you, I often don't have a ground plane. I've found that 'direct etch' works well only with 1/2 oz copper. 
>
> With 1 oz copper you are looking at 8 to 10 minutes of rubbing to clear an index card sized board on one side. That's still bit faster than an agitated bath, but its also a whole lot more work.
>
> I'd rather throw the board in a bath, leave and come back in 10 minutes than stand there and rub continuously for 10 minutes.
>
> Regards,
> Royce
>
>   
>