Homebrew PCBs

Adam Seychell <a_seychell@...> writes:
> Maybe we should start the 2009 Homebrew_PCB annual competition, on who 
> can make finest lines. Here is a a good test pattern. A dual spiral 
> covering an area 100 x 100mm.

Here's a bunch of spiral design files:

        http://www.delorie.com/pcb/spirals/

Let the one-upping begin!