Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "soffee83" <soffee83@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 23, 2006 3:02 AM
Subject: [Homebrew_PCBs] Re: Board cleaning trials


>I wonder what a "watered down", wiped on mix of the actual etchants
> would do in that regard?
>
> I've also wondered at times, just how much effect the texture of the
> surface plays with the toner adhesion (ie: steel wool vs. emery cloth,
> etc.)

The usual test for cleanliness is to see if water wets the surface properly.
When I used to use TT I rubbed the copper with a special block of rubbery
abrasive compound. I've still got it and use it for cleaning PCB material
before prototyping RF circuits using 'ugly' construction.

Leon