Homebrew PCBs

For the life of me............I can't figure out why this guy wants to 
go "rouge"
on this etch compound!

The "soup" gets edgy and not very safe when you go beyond what is required.
But........to each his own....................wear eye and skin protection.

Roland F. Harriston, P.D.


Jim Tonne wrote:

>
>
> > I just buy the cheap stuff at the drugstore....
>
> What is its percentage? 3%?
> He was looking at 10, 20 and 30%.
>
> - JimT
>
>