Lawrence Lile wrote:
>
> > Subject: Success! Resist Pen Works in HP Plotter!
>
> Congratulations!  Thanks for your research!
>
> > The S size has a 0.4mm tip
> > which is PERFECT for running traces *between* the 0.1 inch spacing
> > of DIPs.
>
> Man, you got guts!  I've never run traces between DIP pads for fear
> they'd never work in production.  Does anybody else do work this fine
> with success?
>
We HAVE to run traces between DIP pads - our boards are 16" by 1".  You
don't have much of a choice you put a 40 pin DIP on such a narrow
board.  Ours is a 4-layer PCB - no problems running over -40 to +150 deg
C.  Of course, you've got to use good PCB material - the normal (FR4?)
starts to get soft at high temperature.

> HOW SMALL do you dare make a trace on a board?
We go down to 0.012".  We also have an old HP plotter - used _only_ for
plotting.
--Matt