Re: gEDA-dev: code sprint ideas

[Peter Clifton <pcjc2-at-NOSPAMcam_dot_ac_dot_uk>]

On Mon, 2007-10-15 at 09:30 -0400, DJ Delorie wrote:
> > Can you enlighten me: Why should the distance to soldermask be
> > greater at corners than at straight copper edges?
> 
> Pythagorean theorem.  If the mask opening is rectangular, the corner
> is sqrt(2) times further away.
> 
> IMHO the right solution is an round-cornered mask as well.

See my point about X-Y axis of registration. I think for most machines,
these are likely to be independent, this square mask clearance would be
better. Even when producing by hand, the square + square should be
easier to line up acceptably well.

Peter




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