Homebrew PCBs

On Sun, 16 Apr 2006 16:56:28 +0200, Robert Hedan  
<robert.hedan@...> wrote:

> Being able to flip a PCB over and print the other side properly requires  
> a
>
> perfectly 'square' PCB.  A lot of us cut pieces from larger pieces of  
> PCB,
>
> we'd have to stop that practice.
>
>
> Robert
>
>
>


No, that's not the case.
To ensure a match all you need is to have one point match up and the angle  
of rotation be zero (or alternatively a second point match up)

The edge guide on one side with a centermark is sufficient, how/where the  
other edges are is of no relevance.

I prefer this over the two holes because you don't need to drill anything  
(you also don't need to drill two holes at exactly the right distance).  
making the center mark is simple enough, for example a nick with a nife to  
the edge is easily seen on both sides and very easy to align within 0.1mm  
or so.

ST