Homebrew PCBs

On Tue, 31 Jan 2006 15:47:27 +0100, Mycroft2152 <mycroft2152@...>  
wrote:

> I found that automatic dish washing detergent helps wet out and remove
>
> the paper. I let the board soak for 10 minutes in a solution and the
>
> paper comes off very easily.It's probably the alkalinity in the
>
> detergent that helps. After the soak, I use a 3M green pad to rub off
>
> the paper. I was pleasantly surprised to find that the white haze that
>
> was usually left on the toner for the clay also was removed. The
>
> traces looked nice and black.
>


Yes, i notice the same effect with detergent (for manual dishwashing). I  
was thinking it is because it lowers the surface tension / increases  
wetability but it might be the alkalinity too.
With the detergent i tried the effect was not sufficiently strong to  
justify the added effort in using it compared to plain water, especially  
if i roughen up the back side of the paper with a wire brush or sanding  
paper just before soaking.

I dunno if the removal of the clay is due to your detergent, or the green  
pad?

ST