gacrowell@micron.com wrote:
> That's neat.  I like it very much.  You are limited to fairly large
> holes though, right?  .062" or so?  Will they do smaller diameter
> milling?

The routed channel I showed is .045" wide.

> One slight alternative I might suggest is to make the pad with no drill
> at all, rather define the 'drill' as a plated slot that extends from the
> center of the pad to beyond the board edge.  The board milling then just
> cuts straight across the slot without deviating into the slot.  That way
> the entire slot will be plated and there's no worry of edge milling
> tolerance damaging the plaiting in the 'hole' area.  That would however,
> leave plated material at the board edge (which may/may not be an issue,
> depending on application), but you could eliminate that by deviating the
> board edge mill slightly into the slot, beveling the corners.

I don't see how "the entire slot will be plated" in this case.  The routing
is done after plating and etching, so anything routed will not be plated
between layers.  In this case I don't want conductors extending to the edge
of the board, and what we have is pretty much what we want.  In the actual
boards, there is roughly 2/3 of a plated hole left.  That's plenty for
solder to flow around everything nicely.


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