Homebrew PCBs

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, July 06, 2008 3:00 PM
Subject: Re: [Homebrew_PCBs] etched 5/5 results


> The burrs seemed a bit rough, but it's hard to judge with
> magnification sometimes.
> I found the proxxon tools have better runout, probably in part due to
> the precision collets. The power of the small cheap 12V tools is more
> than plenty for PCB drills.
>
> Ideal drilling results can only be achieved with backing sheet (and
> cover sheet), not that i bother with the size rules i use, but that's
> what i'm told anyway.
>
> If you are going to solder via-wire to the traces it seems a good idea
> to widen the first couple mm of trace, to get a solid joint.

I often use teardrops on my home-made boards. They make the joints more 
reliable, especially for vias.

Leon