What's  the bigger picture around why you're doing this? Mechanical strength 
is next to nothing. The hole plating is not bonded to the board substrate, 
leaving only the pad's attachment to the board and the scrawny trace.

Is this a mezzanine between a daughterboard and the mainboard?

I'd been following the discussion with a faint air of disbelieve, "Nah. That 
can't be what they're talking about..." And then I see in your picture that 
it is.



----- Original Message ----- 
From: "Olin Lathrop" <olin_piclist@embedinc.com>
> and plated hole.  We are doing this because it will be a lot easier to
> attach an assembly with pre-formed leads to the board by sliding it in
> sideways then soldering it on.  So far we've only had a few prototypes
> built, but none of the boards had any krud in the holes when they came 
> back
> from the PCB house.  I have attached a small piece of the Eagle board 
> view.
> Green is pads, red is top layer copper, and white is the outline the board
> house mills the board to.

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