Homebrew PCBs

It is very difficult to get copper clean enough with chemical cleaners. 
Mechanical scrubbing under water is the easiest method for small production 
runs.  Use a wet/dry sandpaper, a Scotchbrite pad, or pumice as an abrasive.

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, May 10, 2005 6:13 PM
Subject: Re: [Homebrew_PCBs] Ultrasonic Cleaner For PCB's?


> On Tue, 10 May 2005 21:56:27 -0000, oatmealnick <NickC84@...>
> wrote:
>
>> Hey guys, I was wondering if it would be possible to use an Ultrasonic
>> Cleaner to clean Copper Clad boards instead of scrubbing them before
>> transfer?

> i don't think it is thorough enough. I haven't tried it tho because i have
> no ultrasonic (they are very expensive).
> I use 1000grit paper, which also roughens the surface for a good hold.