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Subject: Re: [Homebrew_PCBs] 1 and 3 mil lines

From: DJ Delorie <dj@...>
Date: 2009-03-08

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!