Derward Myrick wrote:
>
> I have been busy and just got around to doing it.
> Go to this site and see it. Note that there are 4
> boards shown. I did more but if I show more boards
> it is hard to se the traces. Also the one labeld five mil
> is the three mill and the one labeled 3 mill is the 5 mill.
> http://www.denhamsprings.com/pcb_1mil.jpg
>
> Derward Myrick KD5WWI
When PCB manufacture specifies a track/space width capability of X, then
it should mean one can reliably create a PCB with any arbitrary pattern
over a very large area, having trace width of X and space of X.
Come back with photos of a 100mm x 100mm PCB with 2000 parallel lines
(i.e 1mil width/space).
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.
To qualify:
continuity of trace A and
continuity of trace B and
insulation between A and B
A ---------.
B -------. |
.----. | |
| B | | |
| | A' | |
| '----' |
'--------'