Homebrew PCBs

I have used Porcelain cleaner to remove tarnish from the pcb, I cant 
remember the active ingredients but it does work great !

btw I use this also when it comes to cleaning out the Heat Exchangers or 
Radiators that get that build up of calcium / lime deposits that seem to 
accumulate inside the Tubes ...
Thomas




----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, November 05, 2004 6:57 AM
Subject: Re: [Homebrew_PCBs] Re: PCB cleaning method


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> On Fri, 5 Nov 2004 00:50:36 +0100, Manuel Bessler <pic@...> wrote:
>
>>
>> OK, here are a few more shots:
>> http://cockpit.varxec.net/tmp/s_img_2704.jpg
>>   The board after removing the paper under running water.
>>   You can see two areas where the toner didn't stick well, and the
>> borders
>>   are not well either, but it didn't pose a problem since it was out of
>>   the way of the "active region".
>>   This is just a mounting board and was made in just a few minutes.
>>  I will try a more complex board within the next two weeks hopefully, and
>>   can then report back on the success or failure.
>
>
> look forward to it.
> That copper ring around the holes is very narrow, unless you have
> throughhole plating
> you'll have a hard time drilling and soldering, and getting mechanic
> stability.
> Oblong pads help a great deal.
> I also noticed drilling is easier centered if you only leave a
> smaller-than-final hole on
> the transfer.
>
> ST
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